Lecture notes
Lecture notes Computer science
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- The University Of Salford (USAL)
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Chloe Louise PaineComputer Systems
Basic PC Components
Computer Systems
Basic PC Components
1. What power rating is typically found in a desktop pc?
This depends on what the maximum wattage rating is for the power supply in it, and
what the computers are used for.
For example: You have a desktop computer with a 300 watt power supply in it. Your
particular usage is to surf the net or do office/business work with it. Estimated you
will only use 100 – 150 watts. This is the energy used for a 100 watt light bulb or a
100 watt and a 50 watt light bulb.
2. What name is given to the unidirectional bus that a system uses to select a component
to participate in a data transfer?
Address Bus
Control Bus
3. What name is commonly given to the chip that interfaces to the slower ports on a
motherboard?
Southbridge
4. What type of memory can correct single bit errors in the data?
ECC code is generated when the data is read. If in any case there is a mismatch, it is
decrypted by the parity bits to determine which bit has an error and is immediately
corrected.
5. Which of the following have a parity error?
a. (0567832 ) oct
b. (10010201) binary
Both of the above have a parity error because Binary numbers only contain 1 and 0 and octal
numbers only go from 0-7
6. Which interface provides 10Gbps in each direction for up to 6 daisy chained devices?
10 Gigabit Ethernet is a group of computer networking technologies for transmitting
Ethernet frames at a rate of 10 gigabits per second.
7. What type of interface sends data one bit at a time down a single conductor?
In serial transmission, the various bits of data are transmitted serially one after the
other.
8. What are the most important code sentences that use it, when we write any
programming code:
IF statement – Loop Statement – I/O statements
If (logical expressions)
For – while loops
Input and Output statements
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