T4.3.1 Computational Thinking

Binary

• Base 2: Binary counting, comprising 0s and 1s.
• Binary counting, including 1s and 2s.
• Decimal counting, excluding digits from 0 to 10.

Denary

• Base 10: Decimal counting, comprising digits from 0 to 9.
• Decimal counting, including digits from 0 to 10.
• Base 2: Binary counting, comprising 0s and 1s.

A bit

• Binary digit: A digit represented by 0 or 1.
• A digit represented by 1 or 2.
• 8 binary bits representing values from 64 to 1.

A byte

• 8 binary bits representing values from 128 to 1.
• 8 binary bits representing values from 64 to 1.
• Binary digit: A digit represented by 0 or 1.

LSB

• Rightmost bit with the lowest value (1).
• Rightmost bit with the highest value (2).
• Leftmost bit with the highest value (128).

MSB

• Leftmost bit with the highest value (128).
• Leftmost bit with the lowest value (64).
• Middle bit with the average value (1).

Hexadecimal

• Base 16: counting system for data representation.
• Base 8: counting system for data representation.
• Base 10: counting system for data representation.

255.0

• The highest value in a single byte.
• The highest value in a single bit
• The lowest value in a byte.

Memory location

• Address in RAM where completed instructions are stored.
• Address in RAM where initial instructions are stored.
• Address in ALU where initial instructions are processed.

RETRIEVE

• Control Unit fetches and transfers instructions and data from RAM to ALU.
• Control Unit fetches and transfers instructions and data from RAM to CPU.
• CU moves operation results to specified memory locations.