Positive Binary Numbers (OCR A-Level Computer Science): Flashcards

Base-2

Switches can be on (1) or off (0)

Bit

Powers of 2 ($2^0$, $2^1$, $2^2$, etc.)

Sum products of each bit and its place value

Repeatedly divide by 2, note remainders

Reverse order (bottom to top)

Numeric, text, images, sound

$8 + 0 + 2 + 1 = 11$

1101

ASCII

65 (number), A (ASCII)