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q. Test Review

q. Test Review - Home www.play-hookey.com Tue 08-022005...

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Home www.play-hookey.com Tue, 08-02- 2005 Digital | Logic Families | Digital Experiments | Analog | Analog Experiments | DC Theory | AC Theory | Optics | Computers | Semiconductors | Test HTML Direct Links to Other Digital Pages: Combinational Logic: [ Basic Gates ] [ Derived Gates ] [ The XOR Function ] [ Binary Addition ] [ Negative Numbers and Binary Subtraction ] [ Multiplexer ] [ Decoder/Demultiplexer ] [ Boolean Algebra ] Sequential Logic: [ RS NAND Latch ] [ RS NOR Latch ] [ Clocked RS Latch ] [ RS Flip- Flop ] [ JK Flip-Flop ] [ D Latch ] [ D Flip-Flop ] [ Flip-Flop Symbols ] [ Converting Flip-Flop Inputs ] Alternate Flip- Flop Circuits: [ D Flip-Flop Using NOR Latches ] [ CMOS Flip-Flop Construction ] Counters: [ Basic 4-Bit Counter ] [ Synchronous Binary Counter ] [ Synchronous Decimal Counter ] [ Frequency Dividers ] [ Counting in Reverse ] [ The Johnson Counter ] Registers: [ Shift Register (S to P) ] [ Shift Register (P to S) ] The 555 Timer: [ 555 Internals and Basic Operation ] [ 555 Application: Pulse Sequencer ] Basic Logical Functions and Gates While each logical element or condition must always have a logic value of either "0" or "1", we also need to have ways to combine different logical signals or conditions to provide a logical result. For example, consider the logical statement: "If I move the switch on the wall up, the light will turn on." At first glance, this seems to be a correct statement. However, if we look at a few other factors, we realize that there's more to it than this. In this example, a more complete statement would be: "If I move the switch on the wall up and the light bulb is good and the power is on, the light will turn on."

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q. Test Review - Home www.play-hookey.com Tue 08-022005...

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