DE Key Terms #4

DE

Soldering Iron

Tool with an internal heating element used to heat surfaces being soldered to the point where the solder becomes molten.

Tinning

The process of applying a thin coat of solder to materials prior to their being soldered.

Toggle

To switch from one effect, feature, or state to another.

Transistor-Transistor (TTL)

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

Truth Table

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

Amplitude

The instantaneous voltage of a waveform.

Boolean Expression

An algebraic expression made up of Boolean variables and operators, such as AND (-), OR (+), or NOT (-).

Clocked D Flip-Flop

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

Digital Waveform

A series of logic 1s and 0s plotted as a function of time.

Dual In-Line Package (DIP)

One style of integrated circuit package which has two rows of lead.

Duty Cycle (DC)

Fraction of the total period that a digital waveform is in the HIGH state.

Falling Edge

The part of a pulse where the logic level is in transition from a HIGH to a LOW.

Flip-Flop

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

Frequency

The number of cycles per unit time of a periodic waveform.

Hertz (Hz)

Unit of frequency.