Signals and Switches Questions

• What is a disadvantage of CMOS in place of TTL?
• Why, in most applications, are transistor switches used in place of relays?
• If the input voltage on the base of the transistor in the given figure is changed to +10 V, what is the new voltage at the collector Vc?
• Why is the given circuit called an inverter?
• Why is parallel data transmission preferred over serial data transmission for most applications?
• An indication of cutoff in an NPN bipolar transistor is that the:
• Why does the TTL family use a totem-pole circuit on the output?
• What is used to graphically show the time relationship between two or more digital waveforms?
• What is the advantage of using CMOS logic over TTL?
• What is the frequency of a clock waveform if the period of that waveform is 1.25 µs?
• What can a relay provide between the triggering source and the output that semiconductor switching devices cannot?
• If the input voltage on D1 in the given figure is changed to 0 V, what is the output voltage Vout?
• What is the advantage of using serial data transmission over parallel data transmission?
• The hexadecimal number 4B16 is transmitted as an 8-bit word in parallel. What is the time required for this transmission if the clock frequency is 2.25 MHz?
• Is the transistor in the given figure considered ON or OFF?
• The serial format for transmitting binary information uses:
• Determine the output voltage Vout for the circuit in the given figure.
• To forward bias a diode, a ________ potential is needed on the ________ and a ________ is needed on the ________.
• The units for the HIGH time for a periodic wave are ________.
• The frequency of the clock waveform is defined as the reciprocal of the clock period.