Counter, Shift Register, And Flip-Flop Testing - HP LOGIC PULSER 546A Operating And Service Manual

Model 546A
Page 11
Counter, Shift Register, and Flip-Flop Testing
MSI IC's, such as shift registers and counters, typically have several output pins where data must be
monitored when testing. The logic Pulser, used as a manually controlled clock, allows the logic Clip
to simultaneously examine all output data at rates convenient for viewing.
When the Logic Clip is placed
on an IC, the LED's on the clip
indicate the logic state of each
pin (see Figure 5) . As the Pulser
clocks the input, the indi-
cations on the Clip can be com-
pared to a truth table.
Figure 5. Multi-pin Testing with Logic Clip