Results tagged #Calculator in Circuits
Simple calculator schematic
In this document is a simple calculator and PCB circuit board wiring diagram, simple, interested students can design their own!...
Telephone call meter using calculator & COB
A simple calculator, in conjunction with a COB (chip-on-board) from an analogue quartz clock, is used to make a telephone call meter. The ca...
Calculator-to-stopwatch converter
This circuit can be fitted to any calculator existing calculator battery via the push-on with an automatic constant to enable it to be push-...