Instructions
CS Laboratory 210 Summer 1994 Craig A. Rich
Equipment Heathkit Digital Design Experimenter (ETW-3700): 5 Volt power supply Data switches which produce input values 0 (down) or 1 (up) Logic indicators (LEDs) which receive output values 0 (off) or 1 (on) Clocked pulse generator (1 Hz, 1 kHz, 100 kHz) Socket strips for mounting IC chips
TTL (transistor-transistor logic) IC (integrated circuit) chips: 2 2 1 1 1 1 1 2 1 1 74LS00 74LS02 74LS04 74LS08 74LS10 74LS20 74LS32 7476 74LS86 74LS151 Quadruple 2-input NAND gate (Figure Quadruple 2-input NOR gate (Figure Hex inverter (Figure Quadruple 2-input AND gate (Figure Triple 3-input NAND gate (Figure Dual 4-input NAND gate (Figure Quadruple 2-input OR gate (Figure Dual JK master-slave flip-flops (Figure Quadruple 2-input exclusive OR gate (Figure 8 1 multiplexer (Figure 11-1) 11-1) 11-1) 11-1) 11-1) 11-1) 11-1) 11-12) 11-1) 11-9)
Connecting wires
There are 4 Heathkit Digital Design Experimenters located in the laboratory room 8-52, on a table along the right-hand wall as you enter the lab. IC chips can be purchased from me at bargain prices; some IC chips can be purchased at Radio Shack; most IC chips can be purchased at MarVac/Dow Electronics, 4747 Holt Blvd, Montclair. There are some connecting wires in a coffee can on the counter in the laboratory. Please leave the connecting wires in the laboratory.
General Instructions Handle IC chips with care. Do not bend any of the pins on the IC chips. IC chips are always installed across the horizontal groove on the lower part of the Experimenter. To install an IC chip, first align all the pins of chip the into their corresponding holes. Then, press the chip down gently until it firmly contacts the hole-board. A wire is connected to a pin by inserting it into any of the holes in the column of holes adjacent to the pin. You must connect one pin of every chip (usually pin 14 on 14-pin chips and pin 16 on 16-pin chips) from the power supply voltage (+5V) and one pin (usually pin 7 on 14-pin chips and pin 8 on 16-pin chips) to ground (GND). Input values to the circuit are connected from data switches (SW1, SW2, SW3 and/or SW4). Output values from the circuit are connected to logic indicators (L1, L2, L3 and/or L4). Make all connections and check them before you turn on the power to the Experimenter. Turn off the power to the Experimenter before you modify or disassemble your circuit. When you want to remove an IC chip from the Experimenter, use a small screwdriver or the tip of a mechanical pencil along the groove to pull the chip off the board. Do not use yo...