Chapter 2, Problem 13CRP

a.

The instruction executed if the machine is started with program counter containing $0\times 00$:

Explanation of Solution

Memory cell:

It is the smallest part of the computer memory that can be changed in a single operation. It allows storage of both data and program.

Bit pattern:

A bit pattern is the sequence of bits in a memory which are used to contrast them with some higher level interpretation of bits.

Instruction:

The instructions are the sequence of $0\text{s}$ and $1\text{s}$ that describes the physical operation in the computer.

Address content:

• The bit pattern for memory cell at address $00$ is $0112$

b.

The instruction executed if the machine is started with program counter containing $0\times 01$:

Explanation of Solution

When the machine starts with its program counter containing $00$, then the first instruction that will be fetched and the executed instruction must be