Hardware Questions

Micro processor is a program-controlled device, which fetches the instruction from memory, decodes and executes the instructions. Most Micro Processor are single-chip devices.

You can divide the frequency of a clock by just implementing T Flip flop.

Give clock as clock input and tie the T input to logic 1.

LIFO (Last In First Out) stack is used in 8085. in this type of Stack the last stored information can be retrieved first.

Level 1 cache is internal to the chip, Level 2 is external.

High-density n-type Complimentary Metal Oxide Silicon field effect transistor.

Main Boot Record is located is sector 0, track 0, head 0, cylinder 0 of the primary active partition.

A blocking assignment is one in which the statements are executed sequentially, i.e., first statement is executed and variable is assigned  a value then second is executed and so on. A non blocking assignment is  one in which statements occurs conturrently, only non blocking assignments should be used in sequential circuit.

e.g.

initial

begin

a=b; //blocking

c<=a; //nonblocking

d=c; // blocking

end

In this example firstly the value of b is assigned to a and this value is assigned to c only after execution of first statement. the second and the third statements are executed simultaneously, i.e. value a ais assigned to c and previous value if c is assigned to d.

Stack pointer is a special purpose 16-bit register in the Microprocessor, which holds the address od the top of the stack.