Notes 4 This Activity Sheet Will Study The Ttl Or Logic Gate The Number Is 74aaaa32 Check To Ensure This Number Is O 1 (39.11 KiB) Viewed 20 times
Notes: 4. This Activity Sheet will study the TTL OR Logic gate. The number is 74AAAA32, check to ensure this number is on the DIP chip you install on your breadboard. 5. As the wire is moved from Ground to +5 Volts and back the input will float. This may confuse the logic gate and the Red LED may flicker, light dimly, or light normally. For the purposes of data collection, ONLY record LED status when both of the wires are connected (not floating). 6. The 330 Q resistor may be replaced with one of greater value. 6. Construct the circuit in Figure below on your breadboard. + Measure and record the actual resistor reading VCC 5.0V VCC 5.0V Pin 1 Pin14 Pin 3 Pin_7 R1 3300 41 Pin 2 LED1 2. Use the switches (wires) to test the operation of the gate. Using the LED as an indicator, fill in the table below for each possible condition. Using the multimeter, measure the value of the voltage at the output of the logic gate, across the resistor and across the LED for each possible condition
12 Pin le Pin 2e Gate Output Voltage VR(330) VLED ܒܢ tt ܒܢ ܒܢ ܒܢ ܒܢ ܝܢ 3. What is the current through the LED? Hint: use I = VR(380/R 4. A TTL system does not appear to be working correctly. A technician takes the readings from a 7432 chip (OR Gate) and provides the data in the table below. Is this chip working correctly? le Pin 1 (V Pin 2 (V) oe oe 5e oe Oe se se Pin 3 Ve oe 4.82 1.02 4.7e ت5 2 e
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