Review Questions Multiple Choice 1. A(n) is a set of instructions that a computer follows to perform a task. 1. compiler 2. program 3. interpreter 4. programming language 2. The physical devices that a computer is made of are referred to as . 1. hardware 2. software 3. the operating system 4. tools 3. The part of a computer that runs programs is called .

7. design a circuit with three inputs (x, y, and z) representing the bits in a binary number, and three outputs (a, b, and c) also representing bits in a binary number. when the input is 1, 2, or 3, the binary output should be one lesser than the input. when the input is 4, 5, or 6, the binary output should be one greater than the input. when the input is 0, the output is 0, and when the input is 7, the output is 7. show your truth table, all computations for simplification, and the final circuit.