555555555561. A logic probe is placed on the input of a digital circuit and the probe lamp blinks slowly, indicating ________. (a) that an open or bad logic level exists (b) a high level output (c) a high-frequency pulse train (d) that the supply voltage is low
5555555555105. A logic probe is placed on the output of a digital circuit and the probe lamp is dimly lit. This display indicates ________. (a) that an open or bad logic level exists (b) a high level output (c) a high-frequency pulse train (d) that the supply voltage is low
Logic Probe » Exercise - 1 1. A simple-to-use instrument often used to detect logic levels is the ________. (a) logic meter (b) logic pulser (c) logic probe (d) logic comparator 2. A logic probe is placed on the input of a digital circuit and the probe lamp blinks slowly, indicating ________. (a) a high level output (b) that the supply voltage is low (c) a high-frequency pulse train (d) that an open or bad logic level exists 3. The number of LED display indicators in logic probe are : (a) 1 (b) 2 (c) 1 or 2 (d) 4 4. A logic probe is placed on the output of a gate and the display indicator is dim. A pulser is used on each of the input terminals, but the output indication does not change. What is wrong ? (a) The gate may be a tri-state device. (b) The output of the gate appears to be open. (c) The dim indication is a result of a bad ground connection on the logic probe. (d) The dim indication on the logic probe indicates that the supply voltage is probably low. 5. A logic probe is used to test the pins of a 7411 IC with the following…
Logic Probe » Exercise - 1 1. A simple-to-use instrument often used to detect logic levels is the ________. (a) logic meter (b) logic pulser (c) logic probe (d) logic comparator
555555555561. A logic probe is placed on the input of a digital circuit and the probe lamp blinks slowly, indicating ________. (a) that an open or bad logic level exists (b) a high level output (c) a high-frequency pulse train (d) that the supply voltage is low