7.1 INTRODUCTION
One could easily argue that computers are more useful to us as appliances for information storage and retrieval than they are as instruments of computation. Indeed, without having some means of getting data into the computer and information out of it, we have little use at all for a CPU and memory. We interact with these components only through the I/O devices connected to them.
With personal systems, for example, a keyboard and mouse are the primary user input devices. A standard monitor is an output-only device that presents results to the user. Although most printers provide device status information to the host system to which they are connected, they are still considered output-only devices. Disk drives are called input/output ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access