Quiz Buzzer (µp)
Built to determine order in which contestants press their buzzers during a quiz, this project of mine uses a simple polling sequence & stores contestants. There is an mask that blanks input so participants cannot press their button a second time until the round is over (reset).
As with MOST of my projects, this buzzer uses my very own circuit (designed with EDA software), hand drawn & assembled by my. ALP coding is in 8051 Assembly using an IDE.
This was my first microcontroller project. Built back in August 2004, it took about a week to design & build, and another week to code. Most of the coding was done in my HOD's room (cutting class of course)...
Once finished however, I had to wait until december to actually burn
it onto chip. Being my first uC project I had reservations on being
able to get it to work by myself. I had waited 4 months till I
could get help from someone who had dirtied his hands with the
8051. I then went on to make my own philips programmer...
Anyways, do look at the schematics & alp overleaf
Imran