Review Questions Page 60 #'s 3 -10

1. The computer may read 123.4 as an ASCII code. Today's computers work for more than characters. A group of bits can also represent colors , sounds, quantitative measurements or any information that needs to be processed.

2. COmputers are built from switching devices that reduce all information to 0's and 1's, they represent numbers using the binary number system . It is used becuase it has clear, consistent rukes for every arithmetic operation.


3 Not all software is compatible with all CPU's, software written for one processor would not always work for another. Every processor has a built-in instruction set, if CPU's are not i the same product family it would not be able to execute comands from a different family, make or model of a different company. Power PC processors used in Macs have a different instruction set from INtel CPU's.

4. Another way oof determining a CPU's processing speed is the CPU's word size, The number of buts a CPU's can process atr one time.

5. It is important becuase it should be easy to add peripherals to your computer so the CPU can communicate with the outside world of other networks and store information for later use. They allow computers to be linked to other machines. The input and output peripherals are connected by the buses, slots and ports that are connected to the memory.
Expansion slots can be used inside the computers housing or outside for attached deviceso.

6.To prevent the computers from overheating, manufacturers have begn to offermilticore processors-putting multiple CPU's in a single chip.

7. RAM random access mempry that can be changed by the user.
ROM: Read-only memory is already engrraved into the computer and is still there after the computer is turned off and cannot be changed.