Preview lessons, content and tests

Computer Science & Programming solved. All in one platform.

1. To trial the platform and take tests, please take a few seconds to SIGN UP and SET UP FREE.
2. Searching for something specific? See our text overview of all tests. Includes 'real teacher' use videos.

Join 30000+ teachers and students using TTIO.

Twos Complement

Two's complement is a mathematical operation on binary numbers, and is an example of a radix complement. It is used in computing as a method of signed number representation.


Three-bit signed integers



Decimal Value     


3 011
2 010
1 001
0 000
−1 111
−2 110
−3 101
−4 100

Suggested Video