PC Hardware A Beginner’s Guide

cial characters, and numbers of American English. Table 19-1 includes a sampling of
ASCII characters showing the binary and decimal values for each. The reason for includ-
ing the binary format should become clearer later in the chapter.

Chapter 19: Ports and Connectors^481

Figure 19-4. The standard interface ports on a modern PC

PS/2 ports

USB ports

Serial port

Parallel port

Video port

Game port

Speaker and

microphone jacks

Character Decimal Binary

Null 0 00000000

BACKSPACE 8 00001000

Line Feed 10 00001010

Form Feed 12 00001100

Table 19-1. Sample ASCII Characters