Chapter 19 Test
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Last updated about 5 years ago
50 questions
2
A CPU does everything EXCEPT
A CPU does everything EXCEPT
2
The task of converting AC to DC is performed by
The task of converting AC to DC is performed by
2
Which of the following statements about vacuum tubes is true?
Which of the following statements about vacuum tubes is true?
2
Which of the following statements about semiconductors is NOT true?
Which of the following statements about semiconductors is NOT true?
2
Which of the following statements about integrated circuits is true?
Which of the following statements about integrated circuits is true?
2
When you push a button on a remote control, you are sending a signal to a
When you push a button on a remote control, you are sending a signal to a
2
The central processing unit in a computer is NOT responsible for
The central processing unit in a computer is NOT responsible for
2
Which of the following statements about semiconductors is NOT true?
Which of the following statements about semiconductors is NOT true?
2
A vacuum tube will
A vacuum tube will
2
Which of the following can convert alternating current to direct current?
Which of the following can convert alternating current to direct current?
2
Integrated circuits
Integrated circuits
2
What does a circuit board do?
What does a circuit board do?
2
Which of the following has properties that can change without a break between values?
Which of the following has properties that can change without a break between values?
2
Which of the following carries out a computer’s instructions?
Which of the following carries out a computer’s instructions?
2
A semiconductor conducts current better than which of the following?
A semiconductor conducts current better than which of the following?
2
Which of the following have made it possible for today’s computers to be so small?
Which of the following have made it possible for today’s computers to be so small?
2
In a CD player, which of the following shines on a CD from below?
In a CD player, which of the following shines on a CD from below?
2
Which of the following are carriers of radio and TV signals?
Which of the following are carriers of radio and TV signals?
2
The bulb in a remote control that sends information to a TV is called what?
The bulb in a remote control that sends information to a TV is called what?
2
What does a transistor do?
What does a transistor do?
2
Which of the following devices does NOT perform an output function?
Which of the following devices does NOT perform an output function?
2
Which element forms the basis for semiconductors?
Which element forms the basis for semiconductors?
2
Which of the following objects changes sound waves into an electric current in order to transmit information?
Which of the following objects changes sound waves into an electric current in order to transmit information?
2
Which of the following is an example of input hardware?
Which of the following is an example of input hardware?
2
Beams of electrons that shine on fluorecent materials are used in
Beams of electrons that shine on fluorecent materials are used in
2
A device that can be used as an amplifier or as a switch is called a(n) ______________.
A device that can be used as an amplifier or as a switch is called a(n) ______________.
2
A device that allows electric current to travel in only one direction is called a(n) _____________.
A device that allows electric current to travel in only one direction is called a(n) _____________.
2
Modern computers have a(n) _________________, which is a single semiconductor chip that controls and executes microcomputer’s instructions.
Modern computers have a(n) _________________, which is a single semiconductor chip that controls and executes microcomputer’s instructions.
2
The sounds you hear from a compact disc are a result of the sound being carried by a(n) _______________.
The sounds you hear from a compact disc are a result of the sound being carried by a(n) _______________.
2
A set of instructions or commands that tell a computer what to do is called ______________.
A set of instructions or commands that tell a computer what to do is called ______________.
2
A mouse and keyboard are examples of _______________.
A mouse and keyboard are examples of _______________.
2
A(n) ________________ has properties that can change without a break between values.
A(n) ________________ has properties that can change without a break between values.
2
Semiconductors are used in electronic devices because their conductivity can be changed by ________________.
Semiconductors are used in electronic devices because their conductivity can be changed by ________________.
2
A substance that conducts electric current better than an insulator but not as well as a conductor is a(n) _____________.
A substance that conducts electric current better than an insulator but not as well as a conductor is a(n) _____________.
2
____________ is the addition of impurities to a semiconductor to change its conductive properties.
____________ is the addition of impurities to a semiconductor to change its conductive properties.
2
A ____________ contains circuits that supply current to different parts of electronic devices.
A ____________ contains circuits that supply current to different parts of electronic devices.
2
A __________ can change current from AC to DC.
A __________ can change current from AC to DC.
2
A ___________ is used in amplifiers and switches.
A ___________ is used in amplifiers and switches.
2
_____________ of sounds are used to make vinyl records.
_____________ of sounds are used to make vinyl records.
2
____________ have discrete values of 0 and 1.
____________ have discrete values of 0 and 1.
2
An element or compound that conducts electric current better than an insulator does.
An element or compound that conducts electric current better than an insulator does.
2
The addition of an impurity to a semiconductor to change the arrangement of electrons.
The addition of an impurity to a semiconductor to change the arrangement of electrons.
2
An electronic device that allows electric charge to move mainly in one direction.
An electronic device that allows electric charge to move mainly in one direction.
2
A component that amplifies current.
A component that amplifies current.
2
A circuit whose components are formed on one semiconductor.
A circuit whose components are formed on one semiconductor.
2
Anything that can be used to send information, such as sound or movement.
Anything that can be used to send information, such as sound or movement.
2
A type of signal whose properties can change continuously in a given range.
A type of signal whose properties can change continuously in a given range.
2
A type of signal that can be represented as a sequence of separate values such as 0 and 1.
A type of signal that can be represented as a sequence of separate values such as 0 and 1.
2
An electronic device that can accept data and instructions, follow the instructions, and output the results.
An electronic device that can accept data and instructions, follow the instructions, and output the results.
2
A single chip that controls and executes a computer’s instructions.
A single chip that controls and executes a computer’s instructions.