TM 5-6675-324-14
f. Keyboard. Gives operator direct access and control of the calculator
operation. Pressing a key results in the corresponding command or signal being
and RUN. In PRGM, all keystroke signals are entered into the memory and sent to the
logic circuitry which identifies the location on the keyboard of the function,
letter, or number the keystroke signal represents. In RUN, all keyboard signals are
sent to the logic circuitry for implementation or transfer.
g. LED display. Displays last entry mode into calculator or contents of any
memory register when commanded. Also provides all the visual indications of error
conditions that may exist and the key code of each step of a program when being
entered or run.
h. Magnetic card reader. Used to store programs and subroutines on magnetic
cards. Reads and loads contents of preprogrammed cards into calculator memory.
i. Printer.
Provides hard copy of any data, calculation results, or program
steps.
5-3.4 Remote Control Switches The planimeter pushbutton remote tracer switch and
foot switch enable the operator to remotely activate two of four possible signals:
CLEAR, PRINT, INIT, or ACCU. The signals that the switches control depend on
which input jacks the switches are plugged into.
5-3.5 Power Transformers. Converts ac power to dc power on the auto-scaler. The
calculator uses ac power.
5-10
