**Q11. What is a bit? What is a binary code?**

**Ans.** A bit is an elementary unit of the memory. A bit means binary digit, it is the smallest unit of memory.

A binary code is a coding system using the binary digits 0 and 1 to represent a letter, digit , or other character in a computer or other electronic device.

A binary code is a code written in binary language that is, it’s a combination of 0’s and 1’s.

For example, 1101 1001.