User`s guide

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Figure C-2
The 3 FD chips are the D Flip-Flops that make up the FSM. The PROM is programmed
with all the combinational logic for the system. The CB16CE is our 16 bit counter used to tell
time. The FSM and counter have a common clock signal with 1 kHz frequency. The control has
3 external inputs: Arm, Disarm, and the Accelerometer output. It also has 2 outputs: Alarm
enable and a reset for the accelerometer circuit.