Digital Logic

This function finds Voh for a digital logic gate. 

This function finds Vil for a digital logic inverter. 

A simple definition of a power conversion circuit is a circuit that converts a power source of a certain characteristic (e.g., 110 V AC battery voltage, spacecraft bus) into a power source with a more desirable characteristic (e.g., regulated +5V DC for digital logic, constant current sources). A wide variety of these circuits are presented in this chapter. 

The output of this circuit is generated from a series of square-wave pulses. Square waves are easier to generate than sine waves and can accurately be produced by a digital logic IC. This circuit generates a series of square-wave pulses, skewed in time and summed. This resultant summed waveform resembles a stepped representation of a sinusoidal-wave. This waveform is passed through a filter, and the final signal is a clean sine wave. 

Characteristic Relay systems Digital logic Computers PLC systems... 

Schmauch, Johnson and Stross, and Sternberg studied the influence of the detection system on peak broadening, and Glenn and Cram described a digital logic system for evaluation of instrumental contributions to peak broadening. Because... 

In the simplest case, a digital logic function can be simulated with conventional switches and a battery, the output states being indicated with a light bulb. Two such simple logic circuits are shown in Figure 23.5. 

The circuit in Figure 23.5A performs the basic OR digital logic function. When both switches A and B are open, no current flows to the lamp. However, when either switch A or B or both are closed, current flows to light the lamp. The output state (whether the lamp is on or off) corresponds to the numbers of the binary... 

A circuit for performing another basic logic function is that in Figure 23.5B here, the two switches A and B are connected in series rather than in parallel, so that both switch A and switch B must be closed for the lamp to light. This is a basic digital logic circuit performing the AND function. 

Modern electronic digital logic comes in several microelectronic integrated-circuit forms, details of which are presented elsewhere [3]. Suffice it to say here that these different types of logic differ only in their electronic operating characteristics and requirements, not in the logic functions they perform. 

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