ANSWERS GUARANTEE A+
✔✔what is a system unit? - ✔✔the computer is known as this and it contains many of
the critical hardware and electrical components. also refereed to as the tower, box, or
console.
✔✔System unit is also referred as what? - ✔✔tower, box, or console.
✔✔what is a CPU and what does it do? - ✔✔known as Central processing unit and it is
responsible for getting data from memory, performing arithmetic and logical operations,
and converting data into information.
✔✔what are the 2 main parts of e CPU? - ✔✔the control unit and arithmetic logic unit
(ALU).
✔✔what is the motherboard? - ✔✔a large printed circuit board to which all the other
components are connected.
✔✔what is memory? - ✔✔it is storage for a computer and consist of two types
temporary and permanent.
✔✔what is ROM? - ✔✔Read-Only Memory which is prerecorded on a chip.
✔✔what is RAM? - ✔✔Random Access Memory which is short term memory and stores
data and program instructions waiting to be processed.
✔✔what are 2 examples of Magnetic storage Devices? - ✔✔tracks and sectors
✔✔what is ports? - ✔✔acts as an interface or connector b/w a system's peripheral
devices and the computer, enabling data to be exchange easily.
✔✔what is a parallel port? - ✔✔port that sends data in groups of bits, at transfer rates of
upto 500 Kbps. which is faster then serial port.
✔✔what is a serial port? - ✔✔ports that can send data only one bit at a time. which data
exchange rate is slow.
✔✔what is an Ethernet port? - ✔✔known as RJ-45 jack, looks like a telephone jack but
slightly larger. it is used for network access and can be used to connect a cable modem
or router for internet access.
✔✔what is a USB port? - ✔✔able to interface with several different peripheral devices,
which reduces the need for individual, dedicated ports.
, ✔✔what is a MIDI port? - ✔✔used to connect electronic musical devices, such as
keyboards and synthesizers to a computer, enabling musicians to create digital music
files.
✔✔what is a IrDA port? - ✔✔used to enable devices such as PDA's, keyboards, mice,
and printers to transmit data wirelessly to another device by using infrared light waves.
✔✔what kind of device are monitors and printers? - ✔✔are output devices
✔✔what determines a monitors resolution? - ✔✔the number of pixels on the screen
✔✔what is a hard-copy? - ✔✔the output of a printer (synonymous with printout)
✔✔what is a soft-copy? - ✔✔an image generated by a display monitor as the results of
output
✔✔what are the 2 types of printer categories? - ✔✔impact and nonimpact
✔✔what is an Impact printer? - ✔✔have small hammers, similar to a typewriter's that
strike an ink ribbon against paper leaving behind the image of the character or symbol.
✔✔what is a Nonimpact printer? - ✔✔do not actually touch the paper when printing.
✔✔what is an ink jet printer? - ✔✔uses a special nozzle and ink cartridges to spray ink
in small droplets onto the surface of the paper.
✔✔what is a laser printer? - ✔✔use the same process as photocopies to produce their
output. they use a special cylinder known as a drum, dry ink or toner, and a laser.
✔✔what is a dpi? - ✔✔dots per inch and the higher the dpi the better the print quality.
✔✔what is a computer program? - ✔✔performs various tasks, the computer requires a
set of instructions. these programs enable individuals to use the computer without the
need for special programming skills.also know as system software and application
software
✔✔starting your computer is called what? - ✔✔boot process
✔✔what is the purpose of the operating system? - ✔✔controls the way the computer
works from the time it is turned on until it is shut down.
✔✔GUI stands for what and does what? - ✔✔Graphic user interface and is the most
current operating systems that use a point and click format.