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Acorntree's Posts

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Science/Technology › Re: Embedded Systems: Future Of Electronics And Computer Engineering. by acorntree(m): 6:33pm On Mar 02, 2015
Which programming language are you good in for embedded system. You can also link this thread to https://www.nairaland.com/1988764/electronics-circuit-design-concept-implementation/ for hardware design
Education › Re: Is Africa Too Full Of 'lazy' Intellectuals? by acorntree(op): 2:05pm On Feb 09, 2015
NiceMan4:
Forget about the government. Your destiny is in your hands. How many hours do you spend in chatting, playing games, partying etcetera, you can convert those times in creating ideas. Our problem is that we are overwhelmed by the comfort the west has afforded us, and we don't see the need to work any longer.
Rather I thought it is the general political apathy prevalent mostly amongst the african middle class. As rightly point out, the government has been a huge let down. Whose fault is it? Stop and ask yourself that. Its your fault, its my fault, its our fault. The greatest democratic power necessary for good governance to take place lies with the voters. The day we will vote objectively, that’s the day when things will start shifting in the right direction. If we can make this resolve, bad leaders are much easier to deal with.

Another problem is mental lazyness as I thought was with those who are educated. Unfortunately we’ve all been wrongly told to work hard, earn a good salary and escape poverty. And once one gets academic qualifications, we just sit back. Most of us do what we do to earn a salary, period. Not because we are driven by higher ideals, like being of service to humanity for doctors for instance, I could go on, but i know you get the gist. This too is apathy, laziness. do you know that the bulk of african intellectuals are sitting in multinational corporations and multilateral organisations and are simply just other walters?
Education › Re: Is Africa Too Full Of 'lazy' Intellectuals? by acorntree(op): 6:24am On Feb 09, 2015
hahn:
Word!

We have to accept it, get angered by it and do something about it!
What can we do ? Major problem is from the government.
Education › Re: Is Africa Too Full Of 'lazy' Intellectuals? by acorntree(op): 9:59am On Feb 08, 2015
Education › Is Africa Too Full Of 'lazy' Intellectuals? by acorntree(op):
You Lazy (Intellectual) African Scum!
So I got this in my email this morning…



They call the Third World the lazy man’s purview; the sluggishly slothful and languorous prefecture. In this realm people are sleepy, dreamy, torpid, lethargic, and therefore indigent—totally penniless, needy, destitute, poverty-stricken, disfavored, and impoverished. In this demesne, as they call it, there are hardly any discoveries, inventions, and innovations. Africa is the trailblazer. Some still call it “the dark continent” for the light that flickers under the tunnel is not that of hope, but an approaching train. And because countless keep waiting in the way of the train, millions die and many more remain decapitated by the day.

“It’s amazing how you all sit there and watch yourselves die,” the man next to me said. “Get up and do something about it.”

Brawny, fully bald-headed, with intense, steely eyes, he was as cold as they come. When I first discovered I was going to spend my New Year’s Eve next to him on a non-stop JetBlue flight from Los Angeles to Boston I was angst-ridden. I associate marble-shaven Caucasians with iconoclastic skin-heads, most of who are racist.

“My name is Walter,” he extended his hand as soon as I settled in my seat.

I told him mine with a precautious smile.

“Where are you from?” he asked.

“Zambia.”

“Zambia!” he exclaimed, “Kaunda’s country.”

“Yes,” I said, “Now Sata’s.”

“But of course,” he responded. “You just elected King Cobra as your president.”

My face lit up at the mention of Sata’s moniker. Walter smiled, and in those cold eyes I saw an amenable fellow, one of those American highbrows who shuttle between Africa and the U.S.

“I spent three years in Zambia in the 1980s,” he continued. “I wined and dined with Luke Mwananshiku, Willa Mungomba, Dr. Siteke Mwale, and many other highly intelligent Zambians.” He lowered his voice. “I was part of the IMF group that came to rip you guys off.” He smirked. “Your government put me in a million dollar mansion overlooking a shanty called Kalingalinga. From my patio I saw it all—the rich and the poor, the ailing, the dead, and the healthy.”

“Are you still with the IMF?” I asked.

“I have since moved to yet another group with similar intentions. In the next few months my colleagues and I will be in Lusaka to hypnotize the cobra. I work for the broker that has acquired a chunk of your debt. Your government owes not the World Bank, but us millions of dollars. We’ll be in Lusaka to offer your president a couple of millions and fly back with a check twenty times greater.”

“No, you won’t,” I said. “King Cobra is incorruptible. He is …”

He was laughing. “Says who? Give me an African president, just one, who has not fallen for the carrot and stick.”

Quett Masire’s name popped up.

“Oh, him, well, we never got to him because he turned down the IMF and the World Bank. It was perhaps the smartest thing for him to do.”

At midnight we were airborne. The captain wished us a happy 2012 and urged us to watch the fireworks across Los Angeles.

“Isn’t that beautiful,” Walter said looking down.

From my middle seat, I took a glance and nodded admirably.

“That’s white man’s country,” he said. “We came here on Mayflower and turned Indian land into a paradise and now the most powerful nation on earth. We discovered the bulb, and built this aircraft to fly us to pleasure resorts like Lake Zambia.”

I grinned. “There is no Lake Zambia.”

He curled his lips into a smug smile. “That’s what we call your country. You guys are as stagnant as the water in the lake. We come in with our large boats and fish your minerals and your wildlife and leave morsels—crumbs. That’s your staple food, crumbs. That corn-meal you eat, that’s crumbs, the small Tilapia fish you call Kapenta is crumbs. We the Bwanas (whites) take the cat fish. I am the Bwana and you are the Muntu. I get what I want and you get what you deserve, crumbs. That’s what lazy people get—Zambians, Africans, the entire Third World.
The smile vanished from my face.

“I see you are getting pissed off,” Walter said and lowered his voice. “You are thinking this Bwana is a racist. That’s how most Zambians respond when I tell them the truth. They go ballistic. Okay. Let’s for a moment put our skin pigmentations, this black and white crap, aside. Tell me, my friend, what is the difference between you and me?”

“There’s no difference.”

“Absolutely none,” he exclaimed. “Scientists in the Human Genome Project have proved that. It took them thirteen years to determine the complete sequence of the three billion DNA subunits. After they

were all done it was clear that 99.9% nucleotide bases were exactly the same in you and me. We are the same people. All white, Asian, Latino, and black people on this aircraft are the same.”

I gladly nodded.

“And yet I feel superior,” he smiled fatalistically. “Every white person on this plane feels superior to a black person. The white guy who picks up garbage, the homeless white trash on drugs, feels superior to you no matter his status or education. I can pick up a nincompoop from the New York streets, clean him up, and take him to Lusaka and you all be crowding around him chanting muzungu, muzungu and yet he’s a riffraff. Tell me why my angry friend.”

For a moment I was wordless.

“Please don’t blame it on slavery like the African Americans do, or colonialism, or some psychological impact or some kind of stigmatization. And don’t give me the brainwash poppycock. Give me a better answer.”

I was thinking.

He continued. “Excuse what I am about to say. Please do not take offense.”

I felt a slap of blood rush to my head and prepared for the worst.

“You my friend flying with me and all your kind are lazy,” he said. “When you rest your head on the pillow you don’t dream big. You and other so-called African intellectuals are damn lazy, each one of you. It is you, and not those poor starving people, who is the reason Africa is in such a deplorable state.”

“That’s not a nice thing to say,” I protested.

He was implacable. “Oh yes it is and I will say it again, you are lazy. Poor and uneducated Africans are the most hardworking people on earth. I saw them in the Lusaka markets and on the street selling merchandise. I saw them in villages toiling away. I saw women on Kafue Road crushing stones for sell and I wept. I said to myself where are the Zambian intellectuals? Are the Zambian engineers so imperceptive they cannot invent a simple stone crusher, or a simple water filter to purify well water for those poor villagers? Are you telling me that after thirty-seven years of independence your university school of engineering has not produced a scientist or an engineer who can make simple small machines for mass use? What is the school there for?”

I held my breath.

“Do you know where I found your intellectuals? They were in bars quaffing. They were at the Lusaka Golf Club, Lusaka Central Club, Lusaka Playhouse, and Lusaka Flying Club. I saw with my own eyes a bunch of alcoholic graduates. Zambian intellectuals work from eight to five and spend the evening drinking. We don’t. We reserve the evening for brainstorming.”

He looked me in the eye.

“And you flying to Boston and all of you Zambians in the Diaspora are just as lazy and apathetic to your country. You don’t care about your country and yet your very own parents, brothers and sisters are in Mtendere, Chawama, and in villages, all of them living in squalor. Many have died or are dying of neglect by you. They are dying of AIDS because you cannot come up with your own cure. You are here calling yourselves graduates, researchers and scientists and are fast at articulating your credentials once asked—oh, I have a PhD in this and that—PhD my foot!”
I was deflated.

“Wake up you all!” he exclaimed, attracting the attention of nearby passengers. “You should be busy lifting ideas, formulae, recipes, and diagrams from American manufacturing factories and sending them to your own factories. All those research findings and dissertation papers you compile should be your country’s treasure. Why do you think the Asians are a force to reckon with? They stole our ideas and turned them into their own. Look at Japan, China, India, just look at them.”

He paused. “The Bwana has spoken,” he said and grinned. “As long as you are dependent on my plane, I shall feel superior and you my friend shall remain inferior, how about that? The Chinese, Japanese, Indians, even Latinos are a notch better. You Africans are at the bottom of the totem pole.”

He tempered his voice. “Get over this white skin syndrome and begin to feel confident. Become innovative and make your own stuff for god’s sake.”

At 8 a.m. the plane touched down at Boston’s Logan International Airport. Walter reached for my hand.

“I know I was too strong, but I don’t give it a damn. I have been to Zambia and have seen too much poverty.” He pulled out a piece of paper and scribbled something. “Here, read this. It was written by a friend.”

He had written only the title: “Lords of Poverty.”

Thunderstruck, I had a sinking feeling. I watched Walter walk through the airport doors to a waiting car. He had left a huge dust devil twirling in my mind, stirring up sad memories of home. I could see Zambia’s literati—the cognoscente, intelligentsia, academics, highbrows, and scholars in the places he had mentioned guzzling and talking irrelevancies. I remembered some who have since passed—how they got the highest grades in mathematics and the sciences and attained the highest education on the planet. They had been to Harvard, Oxford, Yale, Massachusetts Institute of Technology (MIT), only to leave us with not a single invention or discovery. I knew some by name and drunk with them at the Lusaka Playhouse and Central Sports.

Walter is right. It is true that since independence we have failed to nurture creativity and collective orientations. We as a nation lack a workhorse mentality and behave like 13 million civil servants dependent on a government pay cheque. We believe that development is generated 8-to-5 behind a desk wearing a tie with our degrees hanging on the wall. Such a working environment does not offer the opportunity for fellowship, the excitement of competition, and the spectacle of innovative rituals.

But the intelligentsia is not solely, or even mainly, to blame. The larger failure is due to political circumstances over which they have had little control. The past governments failed to create an environment of possibility that fosters camaraderie, rewards innovative ideas and encourages resilience. KK, Chiluba, Mwanawasa, and Banda embraced orthodox ideas and therefore failed to offer many opportunities for drawing outside the line.

I believe King Cobra’s reset has been cast in the same faculties as those of his predecessors. If today I told him that we can build our own car, he would throw me out.

“Naupena? Fuma apa.” (Are you mad? Get out of here)

Knowing well that King Cobra will not embody innovation at Walter’s level let’s begin to look for a technologically active-positive leader who can succeed him after a term or two. That way we can make our own stone crushers, water filters, water pumps, razor blades, and harvesters. Let’s dream big and make tractors, cars, and planes, or, like Walter said, forever remain inferior.

A fundamental transformation of our country from what is essentially non-innovative to a strategic superior African country requires a bold risk-taking educated leader with a triumphalist attitude and we have one in YOU. Don’t be highly strung and feel insulted by Walter. Take a moment and think about our country. Our journey from 1964 has been marked by tears. It has been an emotionally overwhelming experience. Each one of us has lost a loved one to poverty, hunger, and disease. The number of graves is catching up with the population. It’s time to change our political culture. It’s time for Zambian intellectuals to cultivate an active-positive progressive movement that will change our lives forever. Don’t be afraid or dispirited, rise to the challenge and salvage the remaining few of your beloved ones.

Field Ruwe is a US-based Zambian media practitioner and author. He is a PhD candidate with a B.A. in Mass Communication and Journalism, and an M.A. in History.

Computers › Re: Converting .cdr Files To .jpeg Format by acorntree(m): 6:21pm On Feb 04, 2015
use bb to change the file extension. just change it to filename.jpg
Computers › Re: ROM Interface To A 7-segment Display. Any Help? by acorntree(m): 6:11pm On Feb 04, 2015
laykhorn:
Anyone has any resources on
.
"Architecture and Development of a ROM interfacing to a 7-segment display"
.
I need your help. I have to submit a report on this topic by Friday and the project March 2nd.
CC: baba11 and other hardware gurus
I have never heard about rom interface to seven segment display. do you mean interfacing seven segment to a microcontroller. ROM IC can never drive a seven segment display without micro, rom is just a memory. Try to reframe your topic
Education › Re: Masters Degree Program Aspirants Meet Here by acorntree(m): 12:10pm On Feb 01, 2015
When is FUTA post graduate form will be out
Politics › Re: I Never Thought APC Would Last This Long – Okupe by acorntree(m): 7:16pm On Jan 27, 2015
dealslip:
If you are not from the north, please leave there before Febuary 14, 2015. If Buhari should mistakenly lose whether by rigging or free and fair election, you will be the first casualty, whether you voted Buhari or not. The corpers that died in 2011 are enough examples. If you are not a Niger Deltan, leave that place before February 14. They have been promising hell if Jonathan doesn't return. Nigerians be wise. Do not waste your life on politicians, because not one of them will lose their lives in the coming election. The soldiers and police Meant to secure your lives are attached to each of them in dozens. Jonathan nor Buhari is a magician. Corruption can only be wiped out by you. If you work in the civil services don't help to manipulate figures or systems or taxes and report to work early. Don't give police and FRSC bribes for circumventing the laws. Don't steal from your office till, do not cheat your fellow man. Do not demand money or contracts from politician in exchange for votes. Reject gifts from them. The cumulation of this vices is what is called corruption. Nigeria wil change if we change because APC is PDP and PDP is APC, there is no change in that.
words of wisdom , enough for the wise.
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op):
vonskyes:
I gave gotten the ferric chloride from oshodi. how do I mix it to get the required etching solution? thanks
try 200 g per liter of water or use trial and error with small sample
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 5:00pm On Jan 27, 2015
vonskyes:
Anybody with any idea where i can get Solder mask for PCB board in Lagos or anywhere in Nigeria. Thanks
Try Oshodi in lagos shop A7 oshodi main market or order
through aliexpress
Car Talk › Re: My Honda/steering Vibrates From 100kmph by acorntree(m): 5:44pm On Jan 21, 2015
tolugar:
I ve same problem with my car (Tata indigo) At 80kmh it vibrates, at 90kmh it stops
If I clutch down it stops. I've done all the wheel balancing and alignment. Tyre is in order same is rim.

My machanic is clueless now

Someone shld help
Major cause is overinflated tyres. Check each of the tyre pressure
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 7:36am On Jan 18, 2015
princejude:
Double sided-PCB

Board size = 46mm x 81mm


5 pieces = N14250 @ N2850 for one
10 pieces = N15390 @ N1540 for one
20 pieces = N17670 @ N890 for one
50 pieces = N25270 @ N500 for one
100 pieces = N35910 @ N360 for one

The choice is yours.
I will go with the last 2 price. Can u consider those who just want to build a prototype of there own design. Those that need only 1 piece.
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 5:51pm On Jan 05, 2015
baba11:
Thanks. I'll try that....
Ok
Jobs/Vacancies › Re: 13 Major Reasons Why Nigerian Graduates Are Unemployable by acorntree(m): 6:55pm On Jan 02, 2015
bushdoc9919:
Want my solution to the above? We have to make our education system practical and problem solving oriented. But that needs a change in mindset. We are not a rich nation. We are a poor nation. The minute we get that into our head and stop deceiving ourselves....is the minute we are on the road to a knowledge based society....and an end to half baked graduates.

Oil is a curse.
Too much theories. Nigerian educationist focus too on theory at the expense of practicals. Lecturers and teachers teach theories as if ones life depends on that alone. If we are really serious with the future of our children, there is need for overhauling of our educational system. If not that's how it will remain.
Science/Technology › Re: Renewable Energy Is The Solution To Nigeria's Power Situation. by acorntree(m):
baba11:
I'm opening this thread as an addendum to this:

https://www.nairaland.com/684167/inverter-users-lets-experience

As we all know, we have many of them in the range of:

solar
Inverter
Biogass
Biomass
Tidal waves
Wind energy
Small hydro electricity generation etc
Of all these means of generating electricity only the solar technology is efficient and reliable. Note: because of the high cost of procuring solar panels + inverter + batteries+others assesories, you can only use it as a backup. So one still need a stable means of electricity which only the government can provide. Such kind of power generation can only be achieved through building dams, nuclear power technology, gas power, or any other system using a replaceable source of energy which can easily be replenished. And these technology are beyond individual.
A kilowatt of electricity is costly to generate. What we pay to NEPA is subsidized. Individual power generation either through solar or any other technology is not the best solution to power problem. Bulk generation is the only workable solution just like mass production. It will be cheaper in the long run, and easy to maintain. A company generate electricity from solar farm (in kw) then distributes to individual.
Politics › Re: Explosive: Why I Can’tabandon Buhari Now –tunde Bakare by acorntree(m): 9:24am On Dec 31, 2014
Marvin67:
You made some important points, but let me highlight somethings.

1. This is not the military regime where the head of state sits in his office and orders soldiers to flog people who perform corrupt acts on the streets, roll them in muddy water, and draws up a list of top officials to be arrested.

2. This is a democracy where institutions are empowered to act. The president can not order the arrest of somebody as he's not the police or the EFCC.

3. Corruption is everybody's battle to fight. Why are we all complaining of the president? Why isn't anyone saying anything about the senators? Let a senator from the opposition present an anti corruption bill, let the house or senate pass it, and let me see if GEJ wouldn't sign it into law. Everyone has a role to play here. Let the EFCC make one high profile arrest, and let me see if GEJ would stop them from trying the person.

4. The insurgency we are seeing in the North today, started because our past leaders neglected the North. They refused to educate the people as they were benefiting from the high level of illiteracy in the North. None of our past leaders built an islamic school where the children can learn islam and normal school work. Now GEJ has built 125, but it looks like the schools are coming a little too late.

5. If Buhari wins, there'd be violence in the south/south. Militancy would start all over again. If GEJ wins, there'd be violence in the North, and in some parts of the south/west. Either ways, 2015 would be hot. BH may stop, but another form of militancy would start, some people are already getting warships.

6. God help Nigeria. Let's all pray for a better nations. Our politicians (both PDP and APC) are selfish, desperate, and full of deception. I think we need a third party in Nigeria, and a third candidate.

GOD BLESS NIGERIA
Nigeria is really in trouble
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 10:33am On Dec 29, 2014
baba11:
I too....it was bringing out error message on nearing completion.
Go to 4shared.com and search for these software. You can use ucbrowser to download if ure using android
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op):
@emahnwell. This is a working pic programmer .programmer software is icprog or winpic. It can burn into almost all pic micro. But require serial port of laptop or desktop.
http://www.circuitvalley.com/2011/05/microchip-pic-serial-port-programmer.html?m=1

Nairaland General › Re: Is Nairaland Having Server Issues? by acorntree(m): 9:44am On Dec 29, 2014
Seun:
Between 7:20am and 7:26am, Nairaland was down for routine maintenance. It should have taken only 2 minutes, but there was a minor issue.
Thanks for your urgent response. Always carry nairalanders along in what ever you are doing. We are one big family
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 10:11am On Dec 27, 2014
Luckygurl:
Hope this can work on a PIC16F877 MC. The circuit connection is a bit complex compared to the ones I've done previously. I'd try it out though
The source code is for pic16f84. You can modify the code to work with any other pic microcontroller if u can learn assembly language
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op):
SOURCE CODE
Assembly language using MPLAB
You can modify the code to suite your need like incorporating alarm timing etc

PROCESSOR PIC16F84A
INCLUDE <P16F84A.INC>
RADIX HEX
ORG 0000h
GOTO MAIN
ORG 0004h
GOTO ISR

;*************************************************************
; 12 HOUR DIGITAL CLOCK PROGRAM
; www. electronicecircuits.com
;***************************************************************


CBLOCK 0Ch
S1
S10
M1
M10
H1
H10
DEL
DEL0
DEL01
DEL02
WHAT
QSTAT

ENDC
#DEFINE DP PORTB,0 ; PIN NO 06 DECIMA POINT


DELAY01 DECFSZ DEL,1
GOTO $-.1
CLRF PORTB
RETURN
DELAY02 MOVLW .2
MOVWF DEL01
DECFSZ DEL01,1
GOTO $-.1
RETURN

; SEVEN SEGMENT DISPLAY CONNECTING TABLE
TABLE ADDWF PCL,1; hgfedcba segments
RETLW B'01111110' ;0 ;
RETLW B'00001100' ;1
RETLW B'10110110' ;2
RETLW B'10011110' ;3
RETLW B'11001100' ;4
RETLW B'11011010' ;5
RETLW B'11111010' ;6
RETLW B'00001110' ;7
RETLW B'11111110' ;8
RETLW B'11011110' ;9

SCAN MOVLW B'00000001' ;SEGMENT 01
MOVWF PORTA
MOVF M1,0
CALL TABLE
MOVWF PORTB
CALL DELAY01
MOVLW B'00000010' ;SEGMENT 02
MOVWF PORTA
MOVF M10,0
CALL TABLE
MOVWF PORTB
CALL DELAY01
MOVLW B'00000100' ;SEGMENT 03
MOVWF PORTA
MOVF H1,0
CALL TABLE
MOVWF PORTB
CALL DELAY01
MOVLW B'00001000' ;SEGMENT 04
MOVWF PORTA
MOVF H10,0
CALL TABLE
MOVWF PORTB
CALL DELAY01
RETURN

INCR INCF S1,1
MOVF S1,0
BCF STATUS,Z
XORLW .10
BTFSS STATUS,Z
RETURN
CLRF S1
INCF S10,1
MOVF S10,0
BCF STATUS,Z
XORLW .6
BTFSS STATUS,Z
RETURN
CLRF S10
INCR_SM INCF M1,1
MOVF M1,0
BCF STATUS,Z
XORLW .10
BTFSS STATUS,Z
RETURN
CLRF M1
INCF M10,1
MOVF M10,0
BCF STATUS,Z
XORLW .6
BTFSS STATUS,Z
RETURN
CLRF M10

INCR_SH INCF H1
SWAPF H10,0
ADDWF H1,0
BCF STATUS,Z
XORLW 13h
BTFSS STATUS,Z
GOTO $+6
CLRF H1
CLRF H10
MOVLW .1
MOVWF H1
RETURN
MOVF H1,0
BCF STATUS,Z
XORLW .10
BTFSS STATUS,Z
RETURN
CLRF H1
INCF H10,1
RETURN
ISR BCF INTCON,GIE
MOVWF WHAT
SWAPF STATUS,0
MOVWF QSTAT
BCF INTCON,T0IF
MOVLW .5
MOVWF TMR0
INCF DEL0,1
MOVF DEL0,0
ANDLW B'01111111'
BCF STATUS,Z
XORLW .125
BTFSS STATUS,Z
GOTO LABLE
BTFSS DEL0,7
GOTO $+.5
CLRF DEL0
CALL INCR
GOTO LABLE
GOTO LABLE
BTFSS DEL0,7
GOTO $+.5
CLRF DEL0
BCF DP ; DECIMAL POINT
CALL INCR
GOTO LABLE
MOVLW .200 ; DECIMAL POINT DELAY SETTING
MOVWF DEL0 ;DECIMAL POINT
BSF DP


LABLE SWAPF QSTAT,0
MOVWF STATUS
SWAPF WHAT,1
SWAPF WHAT,0
BSF INTCON,GIE
RETFIE

KEY BSF OPTION_REG,7
BCF INTCON,GIE
BSF STATUS,RP0
MOVLW B'11101111'
MOVWF TRISB
BCF STATUS,RP0
MOVLW B'00000000'
MOVWF PORTB
CALL DELAY02
; **********************************
SM1 BTFSC PORTB,1 ; SET MINITUS
GOTO SH1
CALL INCR_SM
GOTO KEYX
;***********************************

;***********************************
SH1 CALL DELAY02
BTFSC PORTB,2 ; SET HOUR
GOTO KEYDE
CALL INCR_SH
;***********************************


KEYX BSF STATUS,RP0
CLRF TRISB
BCF STATUS,RP0
MOVLW .100
MOVWF DEL02
CALL SCAN
DECFSZ DEL02,1
GOTO $-.2
BSF INTCON,GIE
BCF OPTION_REG,7
RETURN

KEYDE BSF STATUS,RP0
CLRF TRISB
BCF STATUS,RP0
BSF INTCON,GIE
BCF OPTION_REG,7
RETURN



MAIN CLRF S1
CLRF S10
CLRF M1
CLRF M10
CLRF H1
CLRF H10
CLRF DEL
CLRF DEL0
CLRF DEL01
CLRF DEL02
CLRF WHAT
CLRF QSTAT
BSF STATUS,RP0
CLRF TRISB
CLRF TRISA
MOVLW B'00000011'
MOVWF OPTION_REG
BSF INTCON,T0IE
BSF INTCON,GIE
BCF STATUS,RP0
CALL SCAN
CALL KEY
GOTO $-.2

ORG 2007h
DATA 3FF1h
END
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op):
PIC16F84 12 or 24 Hour Digital
Clock Circuit Diagram And
Programming
This PIC digital clock is based on
a 16F84 microcontroller. it uses
four 7-segment displays.The
software in the microcontroller
allows for very accurate
timekeeping
.
PARTS LIST
R1 – R8 100Ω
R9 10kΩ
R10 R13 10kΩ
C1 22pF
C2 22pF
D1 LED
U1 – U4 Common Cathode 7 Segment
Display
Q1 – Q4 C828
Xtal1 4 MHz Crystal
IC1 7805 Regulator IC
PIC1 PIC 16F84 OR PIC16F84A
PB1 -
PB3 Push to ON push button switch
PB1 for set minutes.
PB2 for set hours.
PB3 for Reset.
D1 LED indicate seconds.

NOTE: this circuit was not designed by me. The program was written using assembly language.
I only designed the PCB layout , burn the hex file into the pic mc and build the circuit. You can modify the circuit for display on large seven segment display.

Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op):
PROJECT FOR THE MONTH OF DECEMBER

Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 7:08am On Dec 24, 2014
Liadi2:
Pls boss I need ur mobile number help me to send it to this email Biodunayodele68@gmail.com
BBM 22EDDABF
Whatsapp +2348057324968
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 12:26am On Dec 23, 2014
Luckygurl:
@acontree, I'd love to own a copy of the pdf version of the book. How do we go about it??

A big thanks to all who responded, I won't hesitate calling on y'all whenever I encounter a problem.
Your email?
Christianity Etc › Re: Pastors That Are Poor Were Not Called By God- Uma Ukpai by acorntree(m): 7:55pm On Dec 21, 2014
If not for the gullibility of most nigerians this so called man of GOD will not be making this type of statement. You've made them to be wealthy so they can now trample on your intelligence anyhow.its an insults on his church members.
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 6:51pm On Dec 21, 2014
https://www.nairaland.com/1214892/microcontrollers. Go through this link if you want to learn programming aspect of electronics design
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 6:44pm On Dec 21, 2014
princejude:
Introduction To Microcontrollers

Welcome to the wonderful world of microcontrollers. You are reading this thread, because you are interested in the fascinating world of electronics. This document assumes that you have basic ideas about electronics, and are able to build simple electronic projects. Although microcontrollers are hi-tech devices, yet they are extremely easy to use. Once you have mastered the ideology behind and know the procedure to control various devices, a whole range of applications is open to you. Devices which required a large number of components and skillful logic design can now be built with almost no or minimal components. One of the greatest advantages of microcontrollers is that they can reduce the hardware requirements dramatically. The logic which was going to be implemented using a number of devices and components can be replaced by software in microcontrollers. Truly speaking microcontrollers are small, one-chip computers. As opposed to microprocessors, which require a number of peripheral devices, like, memory, I/O etc. Microcontrollers have all the necessary peripheral devices built into it. However the scale is small, memory is limited, so are other features.

https://i45.tinypic.com/pn62t.jpg

Remember Microcontrollers were designed to control small peripheral devices, and as such these applications do not require megabytes of memory or the entire power of your PC. Whatever memory and peripheral devices that have been integrated into the package are enough to handle the job. A large number of microcontroller units are available, each differing in terms of memory available, and the number of peripheral devices integrated on the chip. Therefore once you have mastered, how to use these devices, it then remains a matter of choice for a particular application, which microcontroller to choose. Since basic ideology is same, if you master one chip, it is very easy to migrate to another. Moreover if you tend to stick to one clone, they are all upwards compatible.
In a nutshell we can say that a microcontroller is just an integrated circuit which is programmable. Unlike most other digital ICs, which have a designated function, like NAND gates, Flip-flops, Oscillators, 7 segment display drivers, arithmetic calculators etc. Microcontroller has no designated function. If you have a Microcontroller (MCU) chip in your hand and ask what type of function is it going to do? The answer would be I don't know! It can be used to control a motor, or an LCD display, or a 7 segment LED display, or can perform mathematical calculation, or control an infra-red remote control or what else? This is such a surprise that a single chip can do so much. It is versatile, in a sense that you can get a variety of jobs done by this chip, if properly used.
In order to get a job done by this chip, you need to program it first. This program will control the various I/O lines of the chip, and these I/O lines in turn control the devices like motors, LEDs, Infrared sensors etc.
Thus in order to control a device you need to know, its control structure, for example controlling a simple DC motor is different from a stepping motor, and this in turn is different from servo motor. It is therefore essential before starting an application to understand the control requirements of the device. Then you program the microcontroller accordingly, and this makes a complete application.

Microcontroller Applications

Due to the versatile nature of these chips, they have found applications in almost every electronic device today. Think of any device which seems to be computer controlled, it will have a microcontroller working in it.
For example a microwave oven, has a magnetron gun, which heats the food, a motor which rotates the plate, and a display to show the time and cooking parameters etc. Now on the basis of cooking parameters selected by user, the microcontroller inside will be controlling the plate motor, as well as the magnetron gun, turning them on and off periodically to heat the food.
Think of a temperature regulator in your air-conditioner, the microcontroller is sensing the room temperature and according to the selected options, turns the compressor on or off, and the wind swivel motor on and off. So it has a microcontroller as well.
Think of traffic lights, they have to be turned on and off in a set order, it is easy to make them using logical gates, but what if we need to change the order and timing? A microcontroller can do the job easily.
Think of your car, it has microcontroller sitting in it, which is controlling the fuel injection, monitoring the engine RPM, tyre speed, engine temperature and many other parameters. On the other hand it is controlling the amount of fuel to be given, adjusting the appropriate gears and displaying various engine parameters on screen to driver.
Think of an industrial automation system, where small robotic arms are being used to assemble the product, all this automatic process is being carried out by microcontrollers.
Think of the moving sign-boards on airport terminals, the LEDs in them are being controlled by the microcontroller to display messages.
In short there are literally thousands of applications including cell phones, personal and industrial robots, security systems, data logging systems and what not all have microcontroller application.
So if you are interested in electronics as a hobby, or as a professional, it is mandatory to know how to use microcontrollers.

Having a basic idea of electronics, and programming is all that you need to enter into this fascinating world.
This course will take you from beginning to an intermediate level, where you should be able to design your own applications.
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 12:59pm On Dec 21, 2014
@luckygurl start with this http://www.mikroe.com/products/view/11/book-pic-microcontrollers/
Or I can send pdf version of the ebook
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 12:14pm On Dec 21, 2014
Science/Technology › Re: Electronics Circuit Design From Concept To Implementation by acorntree(op): 8:04pm On Dec 16, 2014
9free:
Chief Programmer, are there updates available for the PCB Symbol Library/Gallery?
Or are we limited by the default gallery components?
You can create your own symbols and add to the library for pcb wizard. Search for tutorial on how to do that on the net

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