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| a way of representing some physical quantity, such as temperature or velocity, by a proportional continous voltage or current. An analog voltage or current can have any value within a defined range |
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| the instananious voltage of a waveform. often used to mean maximum amplitude, or peak voltage, or a pulse |
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| the smallest particle of an element that stil has the same characteristics as the element |
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| a circuit board for wiring temporary circuits. usually used for portotypes or laboratory work |
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| any material that allows the free movement of electric changes, such as electrons, to provide an electric current |
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| the direction of current flow associated with positive change in motion. The current flow direction is from a positive to negative potential, which is in the opposite direction of electron flow |
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| digital signal in the form of a rectangular pulse train or a square wave |
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| a movement of elctrical charges around a closed path or circuit |
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| a way of representing a physical quantity by a series of binary numbers. a digital representation can have only specific discrete values |
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| a series of logic 1s and 0s plotted as a function of time |
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| a piece of test equipment used to measure voltage, current, and resistance in an electric circuit |
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| fraction of teh total period that a digital waveform is in the high state. |
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| basic particle of negative charege in orbit; around the nucleus in an atom |
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| current of negative charges in motion. directions is from the negative terminal of the voltage source, through the external circuit, and returning to the positive side of the source. opposite to the direction of conventional current |
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| the part of a pulse where the logic level is in transition from a high to a low |
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| the number of cycles per unit of time or a periodic waveform |
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| unit of frequenc. one hertz equals one cycleper second |
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| a material that does not allow current to flow when voltage is applied because of its high pressure |
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| The algebraic sum of all currents into and out o any brance ina circuit must equal zero |
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| the algebraic sum of all voltages around any closed path must equal zero |
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| the higer of two voltages in a digital system with two logic levels |
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| the lower of two voltages in a digital system with two logic levels |
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| the massive, stable part of the atom that contains both protons and neutrons |
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| unit of resistance. value of one ohm allow currrent of one ampere with potential difference of one volt |
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| in electric circuit, I=V/R |
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| a piece of test equipment used to view and measure a variety of different waveforms |
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| one that has two or more branches for separate current from one voltage source |
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| the amount of time required for one complete cycle of a periodic event or waveform |
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| particle with positvie charge in the nucelus of an atom |
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| test design function by specifying a set of inputs and observing the resultant outputs. Simulation is gernerally shown as a series of inut and output wavefroms |
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| opposition to current. unit is the ohm |
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| on that has only one path current |
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| one in which amplitude varies in proportion to the sine function of an angle |
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| an almost instantaneous rise and decay of voltage or current in a periodic pattern with time and with a constant peak value |
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| TTL-compatible IC that can be wired to operate in several dfferent modes, such as a one-shot and an astable mutivibrator |
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| a solder onnection that exhibits poor wetting and is characterized by a grayisn, porous appearance due to excessive impurities in the solder, inadequate cleaning prior to soldering, and/or the insufficent application of heat during the soldering process |
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Definition
| electronic test equipment that can perform multipl tasks. typicaly one capable of measuring voltage, current, and resistance. More sophisticated modern digital multimeters also measure, capacitance, inductance, current gain of transistors, and/or anything else that can be measure elctronically |
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Definition
| a two terminal device that conducts only in one direction |
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| dual in-line package(DIP) |
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| 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 |
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| a floating point system win which numbers are expressed as products consisitng of a number greater than one mulitplied by an appropriate power of ten that is some multiple of three |
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| a protective device in the current path that melts or breaks when current exceeds a predetermined maximum value |
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| light emitting diode. an electronice device that conducts current in one direction only and illuminates when it is conducting |
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| plastic leaded chip carrier(PLCC) |
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Definition
| a square IC package that leads on all four sides designed for surface mounting on a circuit board |
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| insulating board contained conductive tracks for circuit connecitons |
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| component made of material that opposses flow of current therefore has some value of resistance |
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| term derived from transfer resistor. semiconductor device that can be used as an amplifier or as an elctronic switch |
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| the process of applying a thin coat of solder to materials prior to their being soldered |
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| an IC pakage similar to a dip, but smaller, which is designed for automatic placement and soldering on the surface of a circuit board |
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| an array of seven independently controlled light-emitting diodes or liquid crystal dispaly elements, shaped like a figure-8, which can be used to display decimal digits and other characters by turning on the appropriate elements |
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