Full-size
Provided by the ASK Keyboard Dictionary
Also known as: 100%
"Full-size" describes a keyboard that is complete with an alphanumeric block, numeric keypad, navigation keys, and function keys. Typical modern full-sized keyboards prescribe to the Enhanced layout, which results in 101 or 104 total keys for "ANSI" style keyboards and 102 or 105 total keys for "ISO". The quintessential full-sized keyboard is the Model M-based IBM Enhanced Keyboard, which was largely responsible for cementing the standard that is still so today and is what the Enhanced layout is named after. Historically, "full-size" could also describe a keyboard using the 83-key "XT" or 84-key "AT" layout.