DIGITAL ELECTRONICS EXAM 1 QUESTIONS AND ANSWERS
Analog - CORRECT ANSWER✅✅Continuously moving, never ends. The pitch of a voice or a sine wave.
Example temperature, pressure, velocity, and speed. A classic watch.
Digital - CORRECT ANSWER✅✅Has a beginning and an end. Made up of ones and zeros; is on a
computer or electrical device. An audio recording on mp3 file.
Bit - CORRECT ANSWER✅✅A 1 or 0.
Least significant bit - CORRECT ANSWER✅✅The bit with least significance. The lowest power of 2,
usually 2^0. Usually the far right of a byte.
Most significant bit - CORRECT ANSWER✅✅The bit with the most significance. The highest power of 2,
usually 2^7. Usually the far left of a byte.
Chip - CORRECT ANSWER✅✅Where the logic circuits get stored, contains multiple logic circuits. Has
pins connected aligned with soldered holes. The name of an integrated circuit, made from silicon.
Diode - CORRECT ANSWER✅✅Allows a current to flow in one direction. Won't flow in an opposite
direction. Left side is the anode and the right side is the cathode.
Frequency - CORRECT ANSWER✅✅A measure of number of cycles or pulses per second and is the
reciprocal of the period.
Logic state - CORRECT ANSWER✅✅A binary on or off; high or low
Parallel - CORRECT ANSWER✅✅Transmission with multiple electrical conductors for data to travel on.
Least significant bit goes on the left side.
Relay - CORRECT ANSWER✅✅Electronic device with electromagnetic coil and opens or closes contacts.
It switches the current on or off.
, Surface mount device - CORRECT ANSWER✅✅An improved version of the DIP. Lower cost of
manufacturing from being soldered onto a footprint of the board.
Transistor - CORRECT ANSWER✅✅A switch that can have a current on or off; open and closed. Uses
voltage to be open or closed.
CMOS - CORRECT ANSWER✅✅A pair of metal oxide semiconductor field effect transistors. Has low
power consumption, used in handheld calculators and thermometers. Used to perform logic functions in
digital circuits.
DIP Dual inline package - CORRECT ANSWER✅✅A rectangular device that has two rows of connecting
pins. Dual inline means there's two rows of pins. The device is mounted with several more to create a
larger device.
Integrated circuit - CORRECT ANSWER✅✅Multiple semiconductors and electronic devices on one piece
of silicon. performs functions using many semiconductors.
Oscilloscope - CORRECT ANSWER✅✅A device that shows the waveforms of a timing diagram.
Period - CORRECT ANSWER✅✅The length of time from the falling edge of one pulse to the next pulse.
Serial - CORRECT ANSWER✅✅Transmission with a single electrical conductor for data to travel on. Least
significant bit goes on the left side.
Timing diagram - CORRECT ANSWER✅✅The drawing that shows if a waveform is high or low. Y axis
shows voltage level and X axis shows time.
TTL - CORRECT ANSWER✅✅Has a combination of transistors, diodes, and resistors. Most common
integrated circuit.
Open circuit - CORRECT ANSWER✅✅The circuit is OFF; A 0.
Analog - CORRECT ANSWER✅✅Continuously moving, never ends. The pitch of a voice or a sine wave.
Example temperature, pressure, velocity, and speed. A classic watch.
Digital - CORRECT ANSWER✅✅Has a beginning and an end. Made up of ones and zeros; is on a
computer or electrical device. An audio recording on mp3 file.
Bit - CORRECT ANSWER✅✅A 1 or 0.
Least significant bit - CORRECT ANSWER✅✅The bit with least significance. The lowest power of 2,
usually 2^0. Usually the far right of a byte.
Most significant bit - CORRECT ANSWER✅✅The bit with the most significance. The highest power of 2,
usually 2^7. Usually the far left of a byte.
Chip - CORRECT ANSWER✅✅Where the logic circuits get stored, contains multiple logic circuits. Has
pins connected aligned with soldered holes. The name of an integrated circuit, made from silicon.
Diode - CORRECT ANSWER✅✅Allows a current to flow in one direction. Won't flow in an opposite
direction. Left side is the anode and the right side is the cathode.
Frequency - CORRECT ANSWER✅✅A measure of number of cycles or pulses per second and is the
reciprocal of the period.
Logic state - CORRECT ANSWER✅✅A binary on or off; high or low
Parallel - CORRECT ANSWER✅✅Transmission with multiple electrical conductors for data to travel on.
Least significant bit goes on the left side.
Relay - CORRECT ANSWER✅✅Electronic device with electromagnetic coil and opens or closes contacts.
It switches the current on or off.
, Surface mount device - CORRECT ANSWER✅✅An improved version of the DIP. Lower cost of
manufacturing from being soldered onto a footprint of the board.
Transistor - CORRECT ANSWER✅✅A switch that can have a current on or off; open and closed. Uses
voltage to be open or closed.
CMOS - CORRECT ANSWER✅✅A pair of metal oxide semiconductor field effect transistors. Has low
power consumption, used in handheld calculators and thermometers. Used to perform logic functions in
digital circuits.
DIP Dual inline package - CORRECT ANSWER✅✅A rectangular device that has two rows of connecting
pins. Dual inline means there's two rows of pins. The device is mounted with several more to create a
larger device.
Integrated circuit - CORRECT ANSWER✅✅Multiple semiconductors and electronic devices on one piece
of silicon. performs functions using many semiconductors.
Oscilloscope - CORRECT ANSWER✅✅A device that shows the waveforms of a timing diagram.
Period - CORRECT ANSWER✅✅The length of time from the falling edge of one pulse to the next pulse.
Serial - CORRECT ANSWER✅✅Transmission with a single electrical conductor for data to travel on. Least
significant bit goes on the left side.
Timing diagram - CORRECT ANSWER✅✅The drawing that shows if a waveform is high or low. Y axis
shows voltage level and X axis shows time.
TTL - CORRECT ANSWER✅✅Has a combination of transistors, diodes, and resistors. Most common
integrated circuit.
Open circuit - CORRECT ANSWER✅✅The circuit is OFF; A 0.
