Book N, Ch 3

A CPU does everything EXCEPT

• feed data to a computer.
• do calculations.
• solve problems.
• execute instructions.

The task of converting AC to DC is performed by

• transistors.
• diodes.
• signals.
• amplifiers.

Which of the following is a true statement about vacuum tubes?

• They last longer than transistors or diodes.
• They take up less space than integrated circuits.
• They make communication devices work faster.
• They amplify electric current and change AC to DC.

Which statement is NOT true about semiconductors?

• Semiconductors conduct electric current better than insulators.
• Semiconductors have slowed the pace of technology.
• Semiconductors do not conduct electric current as well as conductors.
• Semiconductors are the backbone of most electronic devices.

Which statement describes an integrated circuit?

• It has one transistor and many silicon chips.
• It operates at a very slow speed.
• It has helped reduce the size of electronic devices.
• It requires electric charges to travel long distances.

When you push a button on a remote control, you are sending a signal to a

• light-emitting diode.
• semiconductor.
• television antenna.
• circuit board.

electronic device that can accept data and instructions, follow the instructions, and output the results

• computer
• diode
• doping
• microprocessor
• analog signal

electronic device that allows electric charge to move mainly in one direction

• computer
• diode
• doping
• microprocessor
• analog signal

adding an impurity to a semiconductor to change the arrangement of electrons

• computer
• diode
• doping
• microprocessor
• analog signal

a single chip that controls and executes a microcomputer’s instructions

• computer
• diode
• doping
• microprocessor
• analog signal