WHAT TO LOOK FOR WHEN PURCHASING AN IBM MODEL M KEYBOARD
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The IBM model M keyboard is that rare piece of computing technology which is both a vintage collectible item and also a useful tool in today's computing environment. IBM model M keyboards are unique in that each one is individually labeled with a serial number and the "date of birth" is printed on the back. They were first built in 1985 and were produced through the 1980s and 1990s, until 1999. Under each keyboard key there is an individual spring that when compressed converts physical force into an electrical signal. Most modern "free with purchase" keyboards used cheaper rubber-pad based technology. In addition, inside each model M keyboard is a steel curved plate for durability while providing a slight ergonomic curved angle to typing. The individual key tops are removable for easy cleaning or for switching the format of the keyboard for different input languages Finally, the lettering on each individual key is physically molded and integrated into the plastic key top (not painted on or a sticker, like on cheap keyboards). If you have made the decision to purchase your first vintage IBM model M keyboard to replace your existing lowest-cost-to-produce / disposable keyboard, there are a few tips on how to select the best keyboard. There are a number of variants of the IBM model M keyboard. Most people are looking for the original IBM extended keyboard with 101 keys, with the model # 1391401 with a standard PS/2 plug on the end of the keyboard cable. These keyboards either have the IBM logo in black text on white background, or (a smaller number) blue text on gray background.
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