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These are some doubts which i got during study of study material of Gate Forum Please Help me out BRIEFLY

Please Somebody Clear up my doubts:-

1.At any time How many units of Computer System can communicate by system bus?

 

2.The number of  instructions which may possibly be executed by a computer depends upon the size of ?

a. Opcode

b.PC

c.MAR

d.Word

 

3.Is it always the case that for storing an operand only one memory word is enough ?

4. If i say memory is word addressable what does exactly it specifies ? Does it means that in one clock cycle CPU can access or transfer one word completely from memory  by bus?

Little clarity please between word addressable and byte addressable Transfer?
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