6. WAIT states are used :
(a) To give slow devices additional time to put out valid data
(b) To insert a deliberate delay
(c) During I/O operation
(d) None of the above
7. Stack pointer is a reg. Which comes into use :
(a) Whenever a data is read from the memory
(b) Whenever a data is written in the memory
(c) Whenever the O/p variable is sent out of the CPU
(d) Whenever an interrupt or high priority call comes from external devices
8. In mp architecture, flag indicates :
(a) The no. of mp
(b) The name of manufacturer
(c) The internal status of the CPU
(d) The bit size of the mp
9. The basic elements of a mp are :
(a) ALU, memory
(b) ALU, control unit
(c) ALU, memory and I/O
(d) ALU, control unit and memory
10. Every processor must necessarily have :
(a) Data bus
(b) Address bus
(c) Control bus
(d) All of the above
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