III. Fill in the blanks necessary words 1. gives instructions that tell computers what to do.
2. directs the computer to perform specific tasks that often involve the user.
3. Memory’s job is to store .
4. can be divided into two main categories.
5. Main memory is usually on .
6. is read-write memory.
7. holds instructions that can be read by the computer but no written over.
8. is memory that supplements main storage.
9. means that the computer is turned off or on.
IV. Fill in the prepositions:
1. Memory can store instructions, programs, data the computer.
2. Main memory is usually chips or a circuit board the other two components of the CPU.
3. RAM random access memory is the storage area controlled the computer’s CPU.
4. Memory so called because its contents are replaced, when instructions are added or when electrical power is shut .
5. ROM holds instructions that can be read, but no written .
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