You can't calculate binary values "as is" on most handheld calculators and using the windows one is just a pain, so i decided to make my very own (binary only) calculator.
This calculator supports all the basic functions like : NOT,OR,AND,XOR, addition,subtraction,multiplication,division and modulo.
So join me as we are going to enter the world of ones and zeros and play with some LEDs and switches along the way!
Step 1: Parts List
Like any electronics project you will need to get some basic tools like:
a soldering iron, some solder wire, a cutter, a needle nosed plier,some wire, wire striper, and some desoldering tools fro fixing mistakes along the way.
The parts for the calculator:
1. 32 LEDs.
2. 8 resistors( The value is determent by the type of LEDs, in my case 91 ohm).
3. 74HC595 shift register.
4. 9 1KOhm resistors.
5. 4 2n4401 transistors.
6. A Perfboard.
8. 16 tact switches with 4 pins.
9. some pin headers.
10. A programmer for the micro.
11. 9V battery holder.
12.A slide switch.
13. 7805 voltage regulator
14. 100nF cap
15. 10uF cap