DATA STORAGE & BINARY NUMBERS

Lecture 2

Computer Science

TXPrep Year 4

DATA

All data and instructions are stored in the computer’s memory in binary form.

The smallest piece of a computer’s memory is called a BIT.

A byte is a group of nits interpreted together. A byte is made up of 8 bits.

BIT, BYTES…..NIBBLES?

Bit: a 1 or a 0

Nibble: 4 bits (used to convert from base 2 to bade 16)

Byte: 8 bits

1K- 1 Kilobyte

1M-1 Megabyte

1G-1 Gigabyte

BAUD-Bits per second

BINARY NUMBERS

We generally evaluate binary numbers in base 2.

Subscript denotes the base.

128 64 32 16 8 4 2 1 are the values

BINARY NUMBERS BY DIVISION