Free ICT tools
Small, hands-on tools that show how computers really work. Free for everyone, no account needed, and they work on any phone.
Number system converter
Type a number in binary, octal, decimal or hexadecimal and see it in the other three at once.
Open toolKeyboard to binary
Press a key and watch it turn into the 1s and 0s a computer understands, then appear on screen.
Open toolFile to binary viewer
Open any file, a photo or a text file, and see the bits it is really made of.
Open toolLogic gates
Flip the switches on AND, OR, NOT, NAND and NOR gates and see when the bulb lights up.
Open toolLogic circuit builder
Join gates, switches and bulbs into your own circuit, then check it with a truth table.
Open tool