Gibilisco - Integrated Circuits
- 1.Because of the small size of ICs compared with equivalent circuits made from discretecomponents,
- A.
More heat is generated.
- B.
Higher power output is possible.
- C.
Higher switching speeds are attainable.
- D.
Fewer calculations need to be done per unit time.
- 2.Which of the following is not an advantage of ICs over discrete components?
- A.
Higher component density
- B.
Ease of maintenance
- C.
Lower gain
- D.
Lower current consumption
- 3.In which of the following devices would you never find an IC as the main component?
- A.
The final amplifier in a large radio broadcast transmitter
- B.
The microprocessor in a personal computer
- C.
A battery-powered calculator
- D.
A low-power audio amplifier
- 4.Which, if any, of the following component types is not practical for direct fabrication on achip?
- A.
Resistors
- B.
Capacitors
- C.
Diodes
- D.
All three of the above component types are practical for direct fabrication on a chip.
- 5.An op amp circuit usually employs negative feedback to
- A.
Maximize the gain.
- B.
Control the gain.
- C.
Allow oscillation over a wide band of frequencies.
- D.
Forget it! Op amp circuits never have negative feedback.
- 6.Suppose a communications channel carries several signals at once. Which type of IC might be used to single one of the signals out for reception?
- A.
An op amp
- B.
A timer
- C.
A comparator
- D.
A multiplexer/demultiplexer
- 7.Which type of IC is commonly used to determine whether two dc voltages are the same ordifferent?
- A.
An op amp
- B.
A timer
- C.
A comparator
- D.
A multiplexer/demultiplexer
- 8.Which type of digital IC is least susceptible to noise?
- A.
Transistor-transistor logic
- B.
Base-coupled logic
- C.
Emitter-coupled logic
- D.
N-channel-coupled logic
- 9.Which of the following is not a characteristic of CMOS chips?
- A.
Sensitivity to damage by electrostatic discharge
- B.
Low current demand
- C.
Ability to work at high speed
- D.
Ability to handle extremely high power
- 10.An absolute limit to the component density that can be achieved in IC technology isdetermined by
- A.
The maximum current levels needed.
- B.
The maximum attainable impedance.
- C.
The size of the semiconductor atoms.
- D.
Forget it! There is no limit to the component density that can be achieved in IC technology.
- 11.With a ROM chip,
- A.
It is easier to read data from the device than to write data into it.
- B.
It is more difficult to read data from the device than to write data into it.
- C.
It is easy to read data from the device, and just as easy to write data into it.
- D.
It is difficult to read data from the device, and equally difficult to write data into it.
- 12.With a RAM chip,
- A.
It is easier to read data from the device than to write data into it.
- B.
It is more difficult to read data from the device than to write data into it.
- C.
It is easy to read data from the device, and just as easy to write data into it.
- D.
It is difficult to read data from the device, and equally difficult to write data into it.
- 13.Which type of IC must be physically removed from the circuit to have its memory contentschanged?
- A.
An EEPROM chip
- B.
An EPROM chip
- C.
An SRAM chip
- D.
A DRAM chip
- 14.With respect to memory, which of the following terms means that the data contents vanish ifpower is removed from a chip?
- A.
Volatility
- B.
Component density
- C.
Multiplexing
- D.
Corruptibility
- 15.In terms of the maximum number of transistors on a single chip, how many orders ofmagnitude larger is VLSI than MSI?
- A.
Two
- B.
Three
- C.
Four
- D.
Forget it! The maximum number of transistors on a VLSI chip is not larger, but smaller than the maximum number of transistors on an MSI chip.
- 16.Flip-flops are used to store data in
- A.
Timers.
- B.
Op amps.
- C.
Multiplexers.
- D.
None of the above.
- 17.Capacitors are used to store data in
- A.
Timers.
- B.
Op amps.
- C.
Multiplexers.
- D.
None of the above.
- 18.The phase of a sine wave signal can be shifted 180° by
- A.
Applying the signal to the input of a timer.
- B.
Applying the signal to the inverting input of an op amp.
- C.
Applying the signal to the input of a flip-flop.
- D.
Applying the signal to the input of an SRAM chip.
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