10. Answer the questions:
1. What is the main function of a computers processor?
2. What unit of frequency is used to measure processor speed?
3. What are the main parts of the CPU?
4. What does ALU stand for? What does it do?
5. What is the function of the system clock?
6. What is a bus, backside bus, front-side bus?
7. What do you know about multiple processors?
11. Read Text B:
Text B
Main Memory
Random access memory (RAM) is a type of data storage
used in computers that is generally located on the motherboard.
This type of memory is volatile and all information that was stored
in RAM is lost when the computer is turned off. Volatile memory
is temporary memory while ROM (read-only memory) is non-
volatile and holds data permanently when the power is turned off.
The RAM chip may be individually mounted on the mother-
board or in sets of several chips on a small board connected to the
motherboard. Older memory types were in the form of chips called
dual in-line package (DIP). Although DIP chips are still used to-
day, the majority of memory is in the form of a module, a narrow
printed circuit board attached to a connector on the motherboard.
The three main memory circuit boards types containing chips are:
RIMMs (Rambus in-line memory modules), DIMMs (dual in-line
memory modules) and SIMMs (single in-line memory modules).
Most motherboards today use DIMMs
.
There are two main types of RAM: dynamic random access
memory (DRAM), or Dynamic RAM, and static random access
memory (SRAM). The RAM in most personal computers (PC’s) is
Dynamic RAM. All dynamic RAM chips on DIMMs, SIMMs or
44
RIMMs have to refresh every few milliseconds by rewriting the
data to the module.
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