Styx
Active Member
a friend of mine's younger brother is taking an electronics module for GCSE's
He has to make a simple adding game adding upto as 7+7
Originally I thought abt using a 4bit adder chip 74HCT283.
I also thoguht abt a good old OPAMP cct.
Both approaches are fesable and my mates bother is comforable with how I explaned their operation. BUT how to display the answer
I thought abt using a POT to increase the input voltages and then using 10LED's to indicate (in a BAR like fassion) the input voltage and a similar thing for the output
However, without going too complex (or expensive 15Euro buget - they are in Ireland)
what would be the best way to display the figure. I would just use a DVM BUT I think it needs to be boxed up
He has to make a simple adding game adding upto as 7+7
Originally I thought abt using a 4bit adder chip 74HCT283.
I also thoguht abt a good old OPAMP cct.
Both approaches are fesable and my mates bother is comforable with how I explaned their operation. BUT how to display the answer
I thought abt using a POT to increase the input voltages and then using 10LED's to indicate (in a BAR like fassion) the input voltage and a similar thing for the output
However, without going too complex (or expensive 15Euro buget - they are in Ireland)
what would be the best way to display the figure. I would just use a DVM BUT I think it needs to be boxed up