Binary Addition (OCR GCSE Computer Science): Flashcards

$0+0=0$, $0+1=1$, $1+1=10$, $1+1+1=11$

$0$

$1$

$10$ (write $0$, carry $1$)

$11$ (write $1$, carry $1$)

Rightmost column

$11111111$

$255$

Result too large to fit in available bits

Result exceeds 8 bits

Carry to next column

Like $9 + 1$ in denary: write $0$, carry $1$