Help needed in the Project

[njarrar]

hey guys i have this project
its attached in the pdf , can anyone help me solving part A , or part B??

 

[Papabravo]

Sure. What do you need help with?

 

[njarrar]

a circuit digram, a solution to a project A , or B
using a 8086 microprocessors , Please
if possible

 

[Norlin]

What part are you stuck on and which part do you need help with? How far have you gotten so far?

 

[njarrar]

i cant figure how to start, what to do , in project A , if i can have a circuit design then i can write the assembly code
but i cant figure the circuit design
am requeried to write the code for this , bs in order to do so i need a circuit design , and thats what i need help in
i didnt start, am weak when it come to hardware design, and i hope i can see this and study it more , so i can understand how it work, in project A

 

[Norlin]

Figure out how keypads work, it'll be a 4x3 matrix so I'm guessing you'll be looking at 7 inputs for the keypad unless you use some sort of IC between your microprocessor and the pad, google for "keypad matrix 8086" or something
You'll have two 7 segment LEDs for digits, figure out if you have common anode or cathode components and figure out which wires control which LED in the display (very easy if you have a diode tester, otherwise simply use a battery and a resistor in series), hook these up to your output pins
Looks like you have four buttons as well, start, pause, stop, reset...if you don't know how to wire up a button, you're in trouble...

 

[njarrar]

thats good , put i need to know how are we gonna connect the keypad with the possessor , what parts do u need , where the keypad must , what to connect with the microprocessor , where to connect the Led, what pins , that kind of things , it would be more clear if i can see a circuit digram, please i need help

 

[Norlin]

To connect the LEDs, see my previous post about how to figure them out
To connect the keypad, use some wires
Connect everything to the inputs or outputs of the microprocessor, depending on what you're interfacing with. We cannot tell you which pins as you're probably going to be defining which you're using as inputs/outputs for the specific devices in your code.

Diagram:
LEDs --- Microprocessor --- Keypad/Buttons

 

[Norlin]

Did a google search "7 segment LED"
First hit came up: https://www.melabs.com/resources/articles/ledart.htm
Look at it

 

[Papabravo]

Try the following link
http://users.telenet.be/kim1-6502/6502/hwman.html
http://users.telenet.be/kim1-6502/6502/usrman.html
http://users.telenet.be/kim1-6502/6502/proman.html

This is how I learned about this stuff

 

[mcs51mc]

This is how I learned about this stuff

Are you really that old ... ... 1976 dammned

 

[Nigel Goodwin]

Are you really that old ... ... 1976 dammned

The KIM-1 was too expensive! - I learned using a Tangerine Microtan 65 (which I still have), a little later though - 1979.

Here's details about it.

https://www.geoff.org.uk/microtan/index.htm

 

[blueroomelectronics]

My first was a hand wired COSMAC ELF 1802. I miss my HP29C more...
**broken link removed**

 

[Papabravo]

Are you really that old ... ... 1976 dammned

Old(?) -- I still don't qualify for a senior citizen discount at restaurants. I dunno at $250.00 It was pretty cheap education.

 

[mcs51mc]

Back to topic

Where were you when the hardware interfacing was explained in class??

You can maybe buy this book: **broken link removed**
Or read the complete online tutorial, starts here: **broken link removed**
Or show us what you already did, that will result in direct answers to your specific problem.