Monday, March 1, 2010

2/2/10 A+ class

Today we talked more on the different functions and components that are found on a motherboard. For instance, the keyboard connectors are the most important input device. The evolution of the keyboard connectors went from the AT connectors (which was a 5 pin DIN) to a PS/2 connector (6 pin DIN). Some computers still have the PS/2 connector (you can identify these connectors easily because the end tips are purple), but the newer computers use USB. So what does that mean? It means that the keyboard connectors are now using USB to connect to the computers. The one bad thing about USBs is that if one goes bad, then they all go bad! Then next was the MIDI, which is Musical Instrument Digital Interface. This was used for a game port. This was used to connect your joystick, but now a USB is used. If you have a MIDI you can replace it with another MIDI by adding a sound card.
Then we talked about the BIOS. BIOS = Basic Input/Output System, this is the most important chip on the motherboard aside from the processor. The BIOS is a ROM (Read Only Memory) chip and contains the information for the system.

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