Random Access Memory – RAM. Where information is stored
temporarily when a program is run. Information is automatically pulled into memory, we cannot control this. RAM is cleared
automatically when the computer is shutdown or rebooted. RAM is volatile (non-permanent).
b. Read Only Memory – ROM. More permanent than RAM. Data
stored in these chips is nonvolatile -- it is not lost when power is removed. Data stored in these chips is either unchangeable or requires a special operation to change. The BIOS is stored in the CMOS, readonly memory.
c. Hard Drive – Where you store information permanently most frequently. This is also nonvolatile.
4. Motherboard – A circuit board that allows the CPU to interact with other parts of the computer.
5. Ports – Means of connecting peripheral devices to your computer. a. Serial Port – Often used to connect a older mice, older external modems, older digital cameras, etc to the computer. The serial port has been replaced by USB in most cases. 9-pin connector. Small and short, often gray in color. Transmits data at 19 Kb/s.
b. Monitor Ports – Used to connect a monitor to the computer. PCs usually use a VGA (Video Graphics Array) analog connector (also known as a D-Sub connector) that has 15 pins in three rows. Typically blue in color.
Because a VGA (analog) connector does not support the use of digital monitors, the Digital Video Interface (DVI) standard was developed. LCD monitors work in a digital mode and support the DVI format. At one time, a digital signal offered better image quality compared to analog technology. However, analog signal processing technology has improved over the years and the difference in quality is now minimal. c. Parallel Port – Most often used to connect a printer to the computer. 25-pin connector. Long and skinny, often pink in color. Transmits data at 50-100 Kb/s.
d. USB Port – Universal Serial Bus. Now used to connect almost all peripheral devices to the computer. USB 1.1 transmits data at 1.5...
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