## Problem title: The hypothetical machine has two I/O instructions: 0011= Load AC fro I/O 0111= Store AC to I/O Solutions
## Problem Set :
The hypothetical machine of figure 3.4 also has two I/O instructions:
0011= Load AC fro I/O
0111= Store AC to I/O
In these cases the 12-bit address identifies a particular I/O device. Show the program execution (using format of figure 3.5) for the following program:
1. Load AC from device 5.
2. Add contents of memory location 940.
3. Store AC to de