1,2,3,... (everyday, mathematics)
0,1,2,... (computer science)
Screen models (x,y) coordinates
y value increases as you read down
(0,0) is upper left hand corner
Each location holds one pixel – a character
Frame of +’s is not part of Screen
5 ´ 3 Screen with
G at position (3,1),
& at position (0,2)