Whats the difference between 101 and 104 computer keyboard?

Question

Its obviously not the number of keys .....plss help

obviously its not the number of keys I counted the total keys and its 107...any difference on functions?? pls help

Answer 1

104-key keyboards contain three extra keys: the two Windows keys, and the Menu key (located next to the Windows key on the right.

If you want to see the changes for yourself, start here:

http://www.pcguide.com/ref/kb/layout/std.htm

and move down the list to see the evolution of the keyboard, and what keys they incorporate.

Answer 2

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Mechanically, a manual typewriter (and some electric ones) has a full linkage assembly to attach each key to the hardware that strikes the page. That needs to be maintained - including cleaning and oiling as part of regular maintenance. The keys are stacked in a stadium configuration.. the 'QWERTY" row is physically higher than the "ASDF" row, and so on. The doo-dad is the "carriage" - a typewriter will have a carriage, an ink ribbon, a carriage return (maybe more than one) The shift-lock physically locks the entire strike area in a different position. Keyboards are usually flat, and have no moving parts other than the keys. Logically, a computer keyboard can send keys for any of the thousands of ASCII characters, in any font in any size. A typewriter usually has only one "font"- even the fancy IBM Selectrics required that a user physically changed a handball-sized metal ball with the physical typeset layout on it. Backspace was pretty useless; only some electric keyboards used anything like "erase" - they just re-typed the letter using white ink. There is no numlock or even a number pad on a typewriter. There is no F-key row, esc,ctrl, alt, windows key, arrow keys, print screen, page up/dn etc. A typewriter is usually a mechanical device that uses springs and levers to cause a typebar or ball with a fixed font to strike a ribbon - pushing ink against the paper to receive the type. Pressure can be adjusted - as can the paper thickness - to accommodate envelopes or multipart forms. A computer keyboard is a digital device, designed only to take 'input' when a key makes electrical contact, or just when the key is pressed and causes a change in capacitance behind it. The keyboard converts that electrical input to a digital output. That output needs to be interpreted by a computer & software before your keystrike means anything at all. Physically & mechanically, the typewriter can only produce about 100 (max) different "glyphs" or characters typed - physically changing the typeset still limited you to a different 100 or so characters. A computer keyboard will let you compose thousands of possible characters, first by using key combinations (control combinations, or alt combos) OR by programming macros into the keyboard, or by the way software interprets the keyboard input. If you try to hit multiple keys at the same time on a typewriter - you just jam up the keys. Typewriters also limit the speed of typing, because there are moving parts. There is a limit to how fast the key can strike the ribbon & page, the carriage advances, the key returns to a neutral position, and a new key can strike the page. I've heard of super-typists that could approach 180-200 wpm, but that was probably the upper limit on an electric typewriter. (opinion) Keyboards still have limits - but the limit is in how fast a user can make useful movements with their fingers. So.. other than the fact that the QWERTY (or DVORAK) layout of the alpha characters looks similar, there are very few similarities between a typewriter and a computer keyboard. The keyboard was -probably- designed to look similar to a typewriter to be more user-friendly when the technology was new, and it has just been slow to develop.

Answer 3

104 Key Keyboard

Answer 4

101 Keyboard

Answer 5

number of keys