1. In negative logic, the logic state 1 corresponds to

A. negative voltage
B. zero voltage
C. more negative voltage
D. lower voltage level
E. None of the above

2. Which of the following is a part of the Central Processing Unit?

A. Printer
B. Keyboard
C. Mouse
D. Arithmetic Logic Unit
E. None of the above

3. The least expensive OCR units can read

A. hand printed numbers
B. machine printed numbers
C. marks
D. handwriting
E. None of the above

4. The input unit of a computer

A. feeds data to the CPU or memory
B. retrieves data from CPU
C. directs all other units
D. All of the above
E. None of the above

5. File specification books are created primarily for the use of

A. systems analysts
B. programmers
C. operators
D. managers
E. None of the above