Ths Fry Digital Electronics Vocabulary 1.3

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AND Gate

Back 1

Digital circuit that implements the AND operation. The output of this circuit is HIGH only if all of its inputs are HIGH.

Front 2

Boolean Expression

Back 2

An algebraic expression made up of Boolean variables and operators, such as AND (-), OR (+), or NOT (-). Also referred to as Boolean function or a logic function.

Front 3

Clocked D Flip-Flop

Back 3

Type of flip-flop in which the D (data) input is the synchronous input.

Front 4

Combinational Logic

Back 4

Digital circuitry in which an output is derived from the combination of inputs, independent of the order in which they are applied.

Front 5

Datasheet

Back 5

A printed specification giving details of the pin configuration, electrical properties, and mechanical profile of an electronic device.

Front 6

Flip-Flop

Back 6

A sequential circuit based on a latch whose output changes when its CLOCK input receives a pulse.

Front 7

Integrated Circuit (IC)

Back 7

An electronic circuit having many components, such as transistors, diodes, resistors, and capacitors, in a single package.

Front 8

Inverter

Back 8

Also called a NOT gate or an inverting buffer. A logic gate that changes its input logic level to the opposite state.

Front 9

Large Scale Integration (LSI)

Back 9

An IC that contains circuitry equivalent to 100 gates or more.

Front 10

Logic Diagram

Back 10

A diagram, similar to a schematic, showing the connection of logic gates.

Front 11

Logic Gate

Back 11

An electronic circuit that performs a Boolean algebraic function.

Front 12

Medium Scale Integration (MSI)

Back 12

An IC that contains circuitry equivalent to more than 11 and less than 100 gates.

Front 13

NOT Circuit

Back 13

Also called an INVERTER gate or an inverting buffer. A logic gate that changes its input logic level to the opposite state.

Front 14

OR Gate

Back 14

Digital circuit that implements the OR operation. The output of this circuit is HIGH (logic level 1) if any or all of its inputs are HIGH.

Front 15

Propagation Delays (tPLH/tPHL)

Back 15

Delay from the time a signal is applied to the time when the output makes its change.

Front 16

Schematic Entry

Back 16

A technique of entering CPLD design information by using a CAD (computer aided design) tool to draw a logic circuit as a schematic. The schematic can then be interpreted by design software to generate programming information for the CPLD.

Front 17

Schottky TTL

Back 17

TTL subfamily that uses the basic TTL standard circuit except that it uses a Schottky barrier code (SBD) connected between the base and the collector of each transistor for faster switching.

Front 18

Sequential Logic

Back 18

Digital circuitry in which the output state of the circuit depends not only on the states of the inputs, but also on the sequence in which they reached their present states.

Front 19

Small Outline Integrated Circuit (SOIC)

Back 19

Dual-inline style surface-mount IC package.

Front 20

Small-Scale Integration (SSI)

Back 20

An integrated circuit having 12 or fewer gates in one package.

Front 21

Transistor-Transistor (TTL)

Back 21

A family of digital logic devices whose basic element is the bipolar junction transistor.

Front 22

Truth Table

Back 22

A list of all possible input values to a digital circuit, listed in ascending binary order, and the output response for each input combination.