Figure 3-11.Example of a remote operator control unit (ROCU).
Refer to figures 3-11 and 3-12 for illustrations of
remote (operator control unit) consoles of computer
You have studied the various ways you can control
different types of computers. You must master the
controls and indicators to operate and maintain the
computers and related equipment to which you are
CONTROLS AND CONTROLLING
This chapter has covered computer controls and
The following information
summarize important points you should have learned:
COMPUTER OPERATOR CONTROLS You
may use operator controls to manually operate the
computer, affect the operation, and/or control parts of
INDICATORS Indicators show status by
turning on a light.
PROTECTIVE DEVICES Protective devices
can prevent damage to the computer or warn you of
conditions that are potentially dangerous.
SWITCHES Switches are used to turn a unit
on/off, to activate a function, or to set a parameter.
There are many types. Some you press, some you flip
up and down, and some are combined with indicators.
COMPUTER CONTROLLING UNITS Each
computer or computer system has one or more
controlling units. These units enable you to manually