What was the connection called before the USB was invented for computer link-up. Remember, your mouse, keyboard etc....all used to have a big bulky connection with two screws on the side. It's similar to what monitors use now. Can anyone remember the name?
2007-03-12 00:59:30 · 10 answers · asked by Anonymous in Computers & Internet ➔ Hardware ➔ Other - Hardware
Mice used to use PS2 and Serial connections. The Serial connection is the one with the two screws.
CK
2007-03-12 01:02:47 · answer #1 · answered by CK 2 · 1⤊ 0⤋
Many computers are still supplied with them. The correct name is 'D-Subminiature', owing to their 'D' type shape. There were and are many variants dependent on the number of pins and shell size.
Shell sizes -
E - 9 pin, A - 15, B - 25, C - 37, D - 50 pin. These are the standard connectors. One might think that the 9 - pin connector should have a shell size of 'A', however it wasn't developed as standard till last.
There are further variations - 'Densi D' and 'Densi D and a half'.
In Densi D, each shell has the number of pins of the standard shell size above it. So shell size E has 15 instead of 9 and so on. This one is the standard VGA, or monitor, connector.
Most D-Subminiature connections are 'Serial'. The other connector was the Centronics, typically having 36 contacts located on either side of a bar running the length of the shell. Centronics were used on printer connections, normally being 'Parallel'.
2007-03-12 01:32:29 · answer #2 · answered by Anonymous · 1⤊ 0⤋
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2016-11-24 22:06:00 · answer #3 · answered by ? 4 · 0⤊ 0⤋
On the back of a 95pc there are 4 ports that have been replaced with a USB port (universal- one to fit all) printer, mouse etc. These were called Com ports and now they are all usb it's so much easier.
2007-03-15 23:19:39 · answer #4 · answered by Anonymous · 0⤊ 0⤋
There have been lots of different connectors for different bits of hardware. Printers and scanners commonly used the Centronics port a large 40 (I think) pin connector. There was the original 25pin serial port that is really antique, and the 9 pin serial port that you still see sometimes. Keyboards and mice have been using the PS/2 connector for yonks but they have used 9 pin serial and DIN connectors. Hope that helps.
2007-03-12 01:05:56 · answer #5 · answered by Mike C 6 · 0⤊ 0⤋
USB took the place of quite a few ports at once. Serial Ports, Game ports, Printer ports, All of those and more were replaced by USB.
2007-03-12 01:07:59 · answer #6 · answered by postmasterfsx 3 · 0⤊ 0⤋
Before USB, serial devices used to connect via either PS2 or RS232 (aka 9-pin D-SUB)
2007-03-12 01:03:21 · answer #7 · answered by mark 7 · 1⤊ 0⤋
COM PORTS com 1 , 2, 3, 4, ect
2007-03-12 01:02:29 · answer #8 · answered by skinnywayne 3 · 1⤊ 0⤋
serial connection
2007-03-12 01:19:30 · answer #9 · answered by simonjohnlaw 5 · 0⤊ 0⤋
serial connection
2007-03-12 01:02:28 · answer #10 · answered by luv2yas 4 · 1⤊ 0⤋