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# vocab cards 2

TermDefinition Sample
Capacitor An electrical device used to store electrical charge. You need to be careful to make sure that capacitor is discharged before touching it.
Clock Digital signal in the form of a rectangular pulse train or a square wave. The program received a clock signal.
Combinational Logic Digital circuitry in which an output is derived from the combination of inputs, independent of the order in which they are applied The combinational logic of the circuit board produced the random numbers.
Cycle A series of events that are regularly repeated in the same order The alarm sounded every 10 minutes in a cycle.
Datasheet A printed specification giving details of the pin configuration,electrical properties, and mechanical profile of an electronic device. According to the data sheet we were missing several transistors.
Digital Waveform A series of logic 1s and 0s plotted as a function of time. Our phone system used a digital waveform to process actions.
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. We used a dual in line package on our number generator.
Fuse A protective device ina current path that melts or breaks when current exceeds a predetermined maximum value When the lighting struck near the house we blew a fuse.
Large Scale integration (LSI) An IC that contains circuitry equivalent to 100 gates or more. The large scale integration was used I. Our circuit since our design required more than 100 gates.
Logic Gate An electronic circuit that performs a Boolean algebraic function. We used a logic gate to help us solve the problems.
Logic High The higher of two voltages in a digital system with logic levels We needed to write down the logic high to find the higher voyages for each level.
Medium Scale integration (MSI) An IC that contains circuitry equivalent to more than 11 and less than 100 gates. We need a medium scale intergration because we had 12 gates
Not gate Also called an INVERTER gate or an inverting buffer. A logic gate that changes its input logic level to opposite state. Not gate never lands on the same as the previous input
OR gate 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. OR gate given us high because one of the inputs was high
Plastic leaded chip carrier (PLCC) A square IC package with leads on all four sides designed for surface mounting on a circuit board. We neeed a PLCC to place on our board.
Printed circuit Board Insulating board containing conductive tracks for circuit connections. Printed circuit boards are more permanent then a breadboard.
Schottky TTL 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. The TTL had be a schotty TTL because it uses a SBD.
Seven-Segment Display An array of seven independently controlled light-emitting diodes (LED) or a liquid crystal display (LCD) elements, shaped like a figure-8, which can be used to display decimal digits and other characteristics by turning on the appropriate elements. The seven segment display showed today’s date.
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 Sequential logic depends on the sequence the reached their present states.
Simulation Testing design function by specifying a set of inputs and observing the resultant outputs. Simulation is generally shown as a series of inputs and outputs waveforms. The simulation gave us a random number.
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. We decided to use a SOIC since it is smaller than a DIP.
Small-Scale Intergration (SSI) An intergrated circuit having 12 or fewer gates in one package. We used a SSI since we only had 8 gates.
Solder Bridge The unwanted formation of a conductive path of solder between conductive path of solder between conductors. The solder bridge shorted ou5 our circuit.
Tinning The process of applying a thin coat of solder to materials prior to their being soldered ; for example, application of a light coat of solder to the filaments of a conductor to hold the filaments in place prior to soldering the conductor. We couldn’t melt the sadder because we hadn’t tinnier the soldering iron.
Toggle To switch from one effect, feature, or a state to another. We toggled the switch on and off.
Transistor Term derived from “transfer resistor.” Semiconductor device that can be used as an amplifier or as an electronic switch We used a transistor as a switch.
Transistor-transistor (TTL) A family of digital logic devices whose basic element is the bipolar junction transistor. We used a TTL since it its 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. We compared our expected value to our actual results in the truth table.
Logic Low The lower of two voltages in a digital system with two logic levels. We found the lower voltage with logic Low.
AND Gate Digital circuit that implements the AND operation. The output of this circuit is HIGH only if all of its inputs are HIGH Our AND gate did not show high since not all the inputs were high
Created by: Christopherpop

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