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| A form of signed binary notation in which negative numbers are created by complementing all bits of a number, including the sign bit |
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| A form of signed binary notation in which negative numbers are created by adding 1 to the 1’s complement form of the |
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| TTL-compatible IC that can be wired to operate in several different modes, such as a one-shot and an astable multivibrator. |
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| Two cells in a K-map are adjacent if there is only one variable that is different between the coordinates of the two cells. |
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| The instantaneous voltage of a waveform. Often used to mean maximum amplitude, or peak voltage, or a pulse. |
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A way of representing some physical quantity, such as temperature or velocity, by a proportional continuous voltage or current. An analog voltage or current can have any value within a defined range.
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| Digital circuit that implements the AND operation. The output of this circuit is HIGH only if all of its inputs are HIGH. |
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| A mathematical function is associative if its operands can be grouped in any order without affecting the result. For example, addition is associative ((a+b) + c = a + (b+c)), but subtraction is not ((a-b) –c ≠ a-(b-c)). |
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| Type of counter in which each flip-flop output serves as the clock input signal for the next flip-flop in the chain. |
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| Flip-flop inputs that can affect the operation of the flip-flop independent of the synchronous and clock inputs. |
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| The smallest particle of an element that still has the same characteristics as the element. |
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| Beginners' All-purpose Symbolic Instruction Code. |
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| Modifier in PBASIC that designates a variable as being a binary bit. |
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| Group of flip-flops connected in a special arrangement in which the states of the flip-flops represent the binary number equivalent to the number of pulses that have occurred at the input of the counter. |
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| A number system used extensively in digital systems, based on the number 2. It uses two digits to write any number. |
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| Smallest number in binary. Can only have the value of 0 or 1. |
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| Algebraic process used as a tool in the design and analysis of digital systems. In Boolean algebra only two values are possible, 0 and 1. |
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| 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. |
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| Rules that can be applied to Boolean algebra to simplify logic expressions. |
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| A variable having only two possible values, such as HIGH/LOW, 1/0, On/Off, or True/False. |
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Definition
| A circuit board for wiring temporary circuits, usually used for prototypes or laboratory work. |
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| A circle in a state diagram containing the state name and values of the state variables. |
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| 8 bits. Can have values in range from 0 to 255. |
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| 16 bits. Can have values from 0 to 65,535. |
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| Counter that can count up or down depending on how its inputs are activated. |
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| Counter that counts upward from 0 to a maximum count. |
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| An electrical device used to store electrical charge. |
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| The smallest unit of Karnaugh map, corresponding to one line of a truth table. The input variables are the cell’s coordinates and the output variable is the cell’s contents. |
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Definition
| Digital signal in the form of a rectangular pulse train or a square wave. |
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Definition
| Type of flip-flop in which the D (data) input is the synchronous input. |
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