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Part B Key Terms

Foundation in Electronics

Capacitor An electrical device used to store electrical charge. A battery can be used to induce an electric potential across the capacitor.
Clock Digital Signal in form of a rectangular pulse train or a square wave. A clock digital signal can have an LED flash after every minute has passed.
Combinational Logic Digital circuitry in which an output is derived from the combination of inputs, independent of the order in which they are applied. When a sequence of things occur before the output is applied.
Cycle A series of events that are regularly repeated in same order. A cycle of LEDs flashing.
Datasheet A printed specification giving details of the pin configuration We create data sheets for information on our circuit boards.
Digital Waveform A series of logic 1s and 0s plotted as a function of time. the digital waveform is what the circuit board and the components use to communicate to each other to do tasks.
Dual In-Line Package (DIP) A very common Ic package with two parallel rows of pins intended to be inserted into a socket of through holes drilled in a printed circuit board. A dual in line package can fit more components because it has more rows of pins.
Fuse A protective device in current path that melts or breaks when current exceeds a predetermined maximum value. A fuse protects the circuit board from melting from the electricity flowing through the components.
Large Scale Integration An IC that contains circuity equivalent to 100 gates or more. The IC that has multiple uses.
Logic Gate An electronic circuit that preforms a boolean algebraic function. Logic gate helps create truth tables.
Logic HIGH The higher of two voltages in a digital system with logic levels. Higher amount of voltage in a component.
Logic LOW tHe lower of two voltages in a digital system two logic levels. Lower amount of voltage in a component.
Medium Scale Integration (MSI) An IC that contains circuitry equivalent to more than 11 and less than 100 gates. An IC smaller then the DIP that has more then 11 gates.
NOT Gate Also called an INVERTER gate or an inverting buffer, A logic gate that changes its input logic level to opposite state. Inverts gates changing input logic level.
OR Gate Digital circuit that implements the OR operation. The output of this circuit is HIGH if any or all of its inputs are HIGH Digital circuit that has an output thats always HIGH.
Plastic Leaded Chip Carrier (PLCC) A square IC package with leads on all four sides designed for surface mounting on a circuit board. Helps mount other components on the circuit board.
Printed Circuit Board Insulating board containing conductive tracks for circuit connections. Helps with insulation for the board with conducting electricity.
Schottky TTL TTL subfamily that uses 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. Helps switch resistors quicker.
Seven-Segment Display An array of seven independently controlled light emitting diodes (LED) or liquid crystal display (LCD) elements, Shaped like a figure, which can be used display decimal digits and other characters by turning on the appropriate elements. LEDs that are all connected and light up at the same time.
Sequential Logic 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. Outputs wont occur unless a specific sequence of inputs are used.
Simulation Testing design functions by specifying a set of inputs and observing the resultant outputs. Simulations is generally shown as a series of input and output waveforms. Helps make sure your design is able to complete its task before its put out to the real world test.
Small Outline IC (SOIC) An IC package similar to a DIP, but smaller, which is designed for automatic placement and soldering on the surface of a circuit board. Smaller IC with less gates.
Small-Scale Integration (SSI) An integrated circuit having 12 or fewer gates in one package Circuit with less gates then MSI and LSI.
Solder Bridge The unwanted formation of a conductive path of solder between package. Solder bridge messes with the inputs and outputs of the board.
Tinning The process of applying a thin coat of solder to materials prior to their being soldered. Application of a light coat of solder to filaments of a conductor to hold the filaments in place prior to soldering the conductor.
Toggle To switch from one effect, feature, or state to another. Toggling between inputs resolve in different outputs.
Transistor Term derived from "transfer resistor." Semiconductor device that can be used as an amplifier or as an electronic switch. Transistor switches between transistors.
Transistor-Transistor (TTL) A family of digital logic devices whose basic element is the bipolar junction transistor. Transistor with bipolar junction.
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. Truth table helps collect data for circuit boards and acts as a simulation.
AND Gate Digital circuit that implements the AND operation. The output of this circuit is HIGH only if all of its inputs. Input with only a high output
Created by: jaiden.laney
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