Q1. With a neat block diagram of the bi-directional shift register with parallel load, describe the working of the register.

Q2. Sketch the flow chart for three digit decimal addition. Draw the block diagram representation of three ways to do addition.

Q3. A two word instruction is stored in the memory at an address designated by the symbol W. The address field of instruction stored at location (W+1) is designated through the symbol Y. The operand employed throughout the execution of the instruction is stored at an address represented by Z. An index register comprises the value X, state how Z is computed from the other addresses if the addressing mode of instruction is:

a) Direct
b) Indirect
c) Relative
d) Indexed

Q4. With a neat flow chart describe the working of an assembler throughout first pass and second pass.

Q5. Draw a block diagram of the control unit in basic computer and describe its operations.

Q6. What do you mean by micro-program sequencer? Draw its block diagram and describe its operation.