Figure 3–1 Standard logic symbols for the inverter (ANSI/IEEE Std. 91-1984). Thomas L. Floyd...

Figure 3–1 Standard logic symbols for the inverter (ANSI/IEEE Std. 91-1984).

Thomas L. FloydDigital Fundamentals, 9e

Figure 3–2 Inverter operation with a pulse input. Open file F03-02 to verify inverter operation.

Figure 3–3 Timing diagram for the case in Figure 3–2.

Figure 3–4

Figure 3–5

Figure 3–6 The inverter complements an input variable.

Figure 3–7 Example of a 1’s complement circuit using inverters.

Figure 3–8 Standard logic symbols for the AND gate showing two inputs (ANSI/IEEE Std. 91-1984).

Figure 3–9 All possible logic levels for a 2-input AND gate. Open file F03-09 to verify AND gate operation.

Figure 3–10 Example of AND gate operation with a timing diagram showing input and output relationships.

Figure 3–11

Figure 3–12

Figure 3–13

Figure 3–14 Boolean expressions for AND gates with two, three, and four inputs.

Figure 3–15 An AND gate performing an enable/inhibit function for a frequency counter.

Figure 3–16 A simple seat belt alarm circuit using an AND gate.

Figure 3–17 Standard logic symbols for the OR gate showing two inputs (ANSI/IEEE Std. 91-1984).

Figure 3–18 All possible logic levels for a 2-input OR gate. Open file F03-18 to verify OR gate operation.

Figure 3–19 Example of OR gate operation with a timing diagram showing input and output time relationships.

Figure 3–20

Figure 3–21

Figure 3–22

Figure 3–23 Boolean expressions for OR gates with two, three, and four inputs.

Figure 3–24 A simplified intrusion detection system using an OR gate.

Figure 3–25 Standard NAND gate logic symbols (ANSI/IEEE Std. 91-1984).

Figure 3–26 Operation of a 2-input NAND gate. Open file F03-26 to verify NAND gate operation.

Figure 3–27

Figure 3–28

Figure 3–29 Standard symbols representing the two equivalent operations of a NAND gate.

Figure 3–30

Figure 3–31

Figure 3–32

Figure 3–33 Standard NOR gate logic symbols (ANSI/IEEE Std. 91-1984).

Figure 3–34 Operation of a 2-input NOR gate. Open file F03-34 to verify NOR gate operation.

Figure 3–35

Figure 3–36

Figure 3–37 Standard symbols representing the two equivalent operations of a NOR gate.

Figure 3–38

Figure 3–39

Figure 3–40

Figure 3–41 Standard logic symbols for the exclusive-OR gate.

Figure 3–42 All possible logic levels for an exclusive-OR gate. Open file F03-42 to verify XOR gate operation.

Figure 3–43

Figure 3–44 Standard logic symbols for the exclusive-NOR gate.

Figure 3–45 All possible logic levels for an exclusive-NOR gate. Open file F03-45 to verify XNOR gate operation.

Figure 3–46 Example of exclusive-OR gate operation with pulse waveform inputs.

Figure 3–47

Figure 3–48 An XOR gate used to add two bits.

Figure 3–49 Basic concept of a programmable AND array.

Figure 3–50

Figure 3–51 The programmable fuse link.

Figure 3–52 The programmable antifuse link.

Figure 3–53 A simple AND array with EPROM technology. Only one gate in the array is shown for simplicity.

Figure 3–54 Basic concept of an AND array with SRAM technology.

Figure 3–55 Setup for programming a PLD in a programming fixture (programmer).

Figure 3–56 Programming setup for reprogrammable logic devices.

Figure 3–57 Examples of design entry of an AND gate.

Figure 3–58 Simplified illustration of in-system programming via a JTAG interface.

Figure 3–59 Simplified block diagram of a PLD with an embedded processor and memory.

Figure 3–60 Typical dual in-line (DIP) and small-outline (SOIC) packages showing pin numbers and basic dimensions.

Figure 3–61 Pin configuration diagrams for some common fixed-function IC gate configurations.

Figure 3–62 Logic symbols for hex inverter (04 suffix) and quad 2-input NAND (00 suffix). The symbol applies to the same device in any CMOS or TTL series.

Figure 3–63

Figure 3–64 The LS TTL NAND gate output fans out to a maximum of 20 LS TTL gate inputs.

Figure 3–65 The partial data sheet for a 74LS00.

Figure 3–66 The partial data sheet for a 74HC00A.

Figure 3–67 The effect of an open input on a NAND gate.

Figure 3–68 Troubleshooting a NAND gate for an open input.

Figure 3–69 Troubleshooting a NOR gate for an open output.

Figure 3–70

Figure 3–71

Figure 3–72

Figure 3–73

Figure 3–74

Figure 3–75

Figure 3–76

Figure 3–77

Figure 3–78

Figure 3–79

Figure 3–80

Figure 3–81

Figure 3–82

Figure 3–83

Figure 3–84

Figure 3–85

Figure 3–86

Figure 3–87

Figure 3–88

Figure 3–89

Figure 3–90

Figure 3–91

Figure 3–92

Figure 3–93

Figure 3–94

Figure 3–95

Figure 3–96

Figure 3–97

Figure 3–98

Figure 3–99

Figure 3–100

Figure 3–101

Figure 3–102

Figure 3–103

Figure 3–104

Figure 3–1 Standard logic symbols for the inverter (ANSI/IEEE Std. 91-1984). Thomas L. Floyd...

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