3-68.
A program has been installed and the
computer is operating. The enabling and
disabling circuits will stop operating under
each of the following conditions except
which one?
1. Fault condition occurs
2. Programmed stop is reached
3. Program completion is reached
4. Instructions are executing
3-69.
The master clock in a computer is the key
to the computer’s timing circuits. Master
clocks usually operate at a frequency or
pulse-repetition rate determined by which
of the following factors?
1.
The maximum speed of the operator
2.
The minimum speed of the operator
3.
The minimum rate the computer can
handle data
4.
The maximum rate the computer can
handle data
3-70.
In computer timing circuits, what is the
most important reason for using
oscillators?
1. Their output characteristics
2. Their frequency stability
3. Their phase processing
4. Their speed
26
IN ANSWERING QUESTIONS 3-71 THROUGH
3-74, SELECT FROM THE FOLLOWING LIST
THE TYPE OF MULTIVIBRATOR DESCRIBED
BY THE PHRASE IN EACH QUESTION.
3-71.
3-72.
3-73.
3-74.
3-75.
1.
Monostable
2.
Bistable
3.
Astable
The multivibrator that is also referred to as
a one-shot multivibrator.
The multivibrator that counts clock pulses.
The multivibrator also known as a
free-running multivibrator.
The multivibrator used to enable logic
gates.
A single-phase clock system has what types
of multivibrators?
1. Monostable and bistable
2. Bistable and astable
3. Monostable and astable
4. Astable and multistable
