Concepts

1. Data Representation:
   • Analog Data: Continuous data.
   • Digital Data: Represented by 1 and 0.
   • Sampling: Converting analog data to digital numbers.
2. Data Storage and Processing: Using microscopic switches to store data as open (0) or closed (1) circuits.
3. Definitions:
   • Bit: Basic unit of data.
   • Byte: Group of 8 bits.
   • Nibble: 4 bits.
   • Kibibyte: 1024 bytes.
4. Number Systems:
   • Denary (Decimal): Base 10.
   • Binary: Base 2.
   • Conversion: Methods for converting between denary and binary.
5. Registers: Storage locations in computers, with a focus on their size.

The document includes practice questions for converting between binary and denary.

Converting between different number system

Decimal to Binary

Formula: Continuously divide by 2, record the remainders, until the quotient is 0. Then, reverse the order of the remainders.

Example: Convert decimal number 45 to binary.

1. 45 ÷ 2 = 22 remainder 1
2. 22 ÷ 2 = 11 remainder 0
3. 11 ÷ 2 = 5 remainder 1
4. 5 ÷ 2 = 2 remainder 1
5. 2 ÷ 2 = 1 remainder 0
6. 1 ÷ 2 = 0 remainder 1

Result: Reverse the remainders: 101101

Binary to Decimal