The standard layout of letters, numbers, and punctuation is known as a QWERTY keyboard because the first six keys on the top row of letters spell QWERTY. The QWERTY keyboard was designed in the 1800s for mechanical typewriters and was actually designed to slow typists down to avoid jamming the keys. Another keyboard design, which has letters positioned for speed typing, is the Dvorak keyboard.

There is no standard computer keyboard, although many manufacturers imitate the keyboards of PCs. There are actually three different PC keyboards: the original PC keyboard, with 84 keys; the AT keyboard, also with 84 keys; and the enhanced keyboard, with 101 keys. The three differ somewhat in the placement of function keys, the Control key, the Return key, and the Shift keys.

In addition to these keys, IBM keyboards contain the following keys: Page Up, Page Down, Home, End, Insert, Pause, Num Lock, Scroll Lock, Break, Caps Lock, Print Screen.

There are several different types of keyboards for the Apple Macintosh. All of them are called ADB keyboards because they connect to the Apple Desktop bus (ADB). The two main varieties of Macintosh keyboards are the standard keyboard and the extended keyboard, which has 15 additional special-function keys.

GlobalSpec.com: Keyboards & Keypads - Database of suppliers for keyboards and other computer peripherals. Provides catalogs, technical information and supplier contact information.

Keyboard Controller functions
Describes the functions of the keyboard controller and what functions it provides. This page is from "The PC Guide".

Troubleshooting Keyboards
Discusses troubleshooting of problems with keyboards or related to them. This page is from "The PC Guide."

Yahoo!'s Dvorak keyboard page
Yahoo!'s directory of Dvorak keyboard.

Yahoo!'s keyboards page
Yahoo!'s directory of keyboards.