Tuesday, October 28, 2008

USB (Universal Serial Bus) port - A type of port designed to make installation and configuration of I/O devices easy, providing room for as many as 127 devices daisy-chained together.
video card - An interface card installed in the computer to control visual output on a monitor. Also called display adapter.
virtual memory - A method whereby the OS uses the hard drive as though it were RAM.
virus - A program that often has an incubation period, is infectious and is intended to cause damage. A virus program might destroy data and programs or damage a disk drive’s boot sector.
Softwares?
USB (Universal Serial Bus) port - A type of port designed to make installation and configuration of I/O devices easy, providing room for as many as 127 devices daisy-chained together.
video card - An interface card installed in the computer to control visual output on a monitor. Also called display adapter.
virtual memory - A method whereby the OS uses the hard drive as though it were RAM.
virus - A program that often has an incubation period, is infectious and is intended to cause damage. A virus program might destroy data and programs or damage a disk drive’s boot sector.
Softwares?
memory - Physical microchips that can hold data and programming located on the motherboard or expansion cards.
modem - From MOdulate/DEModulate. A device that modulates digital data from a computer to an analog format that can be sent over telephone lines then demodulates it back into digital format.
monitor - The most commonly used output device for displaying text and graphics on a computer.
motherboard - The main board in the computer also called the system board. The CPU, ROM chips, SIMMs, DIMMs, RIMMs and interface cards are plugged into the motherboard.
mouse - A pointing and input device that allows the user to move a cursor around a screen and select programs with the click of a button.
operating system (OS) - Software that controls a computer. An OS controls how system resources are used and provides a user interface, a way of managing hardware and software and ways to work with files.
parallel port - A female 25-pin port on a computer that can transmit data in parallel, 8 bits at a time and is usually used with a printer. The names for parallel ports are LPT1 and LPT2.
RAM (Random Access Memory) - Memory modules on the motherboard containing microchips used to temporarily hold data and programs while the CPU processes both. Information in RAM is lost when the PC is turned off.
serial port - A male 9-pin or 25-pin port on a computer system used by slower I/O devices such as a mouse or modem. Data travels serially, one bit at a time through the port. Serial ports are sometimes configured as COM1, COM2, COM3 or COM4.
1000 KB = 1MB ( KB = Kilo Bytes, MB = Mega Bytes )
1000 MB = 1GB ( GB = Giga Bytes)

CPU (Central Processing Unit - Also called a microprocessor or processor. The heart and brain of the computer which receives data input, processes information and executes instructions.
hard drive - The main secondary storage device of a PC; a small case that contains magnetic coated platters that rotate at high speed.
hardware - The physical components that constitute the computer system such as the monitor, the keyboard, the motherboard and the printer.
keyboard - A common input device through which data and instructions may be typed into computer memory.
LAN (Local Area Network) - A computer network that covers only a small area usually within one building.
megahertz (MHz) - One million Hz or one million cycles per second.
Prospect Burma ELT school
Basic Computer Application Course

What is a Computer?
A computer is a programmable electronic multimedia device.

The main parts of a typical computer system are shown above
Most computers are made up of the following components:
Case
Power supply unit
Microprocessor (CPU)
Memory
Motherboard
Hard disk drive
Floppy disk drive
DVD-ROM/CD-RW Drive
DVD-R/W Drive
Keyboard n Mouse
Monitor
Sound Card
Video Card
Speakers
Printer
Modem
Ethernet Port (NIC)
Scanner

Saturday, October 25, 2008

Friday, October 17, 2008