Logical Elements AND, OR, and XOR. History, Theory, and Application.
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0:00 Logic Elements in Electronics.
0:19 What are logic elements and what are they used for?
0:57 Generations of Digital Integrated Circuits and Their Supply Voltages. Why is logic powered from 5 volts?
1:29 What are the characteristics of TTL logic? The difference between TTL, RTL, and DTL logic.
2:14 TTL Signal Levels at the Input and Output of Elements. Switching Threshold. Switching Frequency, Branching Ratio.
3:08 TTL SN74 and K155 Series. CMOS/CMOS Logic. Supply Voltage, Frequency Response. TTL Compatibility.
4:18 Why Are Logic Gates Good for Digital Designers? Component Compatibility. 5 Volts, 3.3 Volts.
5:12 Why Are Logic Gates Needed? Why Can't a Computer Store Data in Decimal?
6:10 OR Gate. Truth Table for the OR Gate.
7:13 AND Gate. Truth Table for the AND Gate.
7:39 XOR Gate. Truth Table, Differences from the OR Gate.
8:16 Inverter Gate. Reversing Signal Polarity, Negating Information.
8:35 Installing an Inverter on the Output of Other Logic Gates. NAND and NOR Gates.
9:13 Buffer Gate. Signal amplification and duplication.
9:47 Specifying the number of inputs in the element name.
10:28 Assembling a combination lock for an entrance using logic elements.
11:40 Why is the button at the input of a logic element connected to negative?
12:30 What is a pull-up resistor and what is it for?
12:49 Key polling logic for a lock. Operation of a 4-OR element.
14:13 What is the logical error in the combination lock control circuit?
15:04 Adding a poll for released keys. 6-AND-NOT logic element.
16:36 Truth table of a combination lock circuit.
17:10 Decoder logic element.
18:33 Using a decoder in a classic computer structure. Device addressing. CS signal.
19:38 Trigger. Flip Flop. Basic types of triggers.
20:55 RS-Trigger Logic Element. Set, Clear, Direct, and Inverted Outputs.
22:33 A Simple Switch Based on an RS-Trigger.
23:35 D-Trigger Logic Element. Data Input, Clock/Strobe Input.
24:51 The Importance of D-Triggers in Computing. Static Memory, SRAM.
25:56 Counter Logic Element. Reset Input, Clock Input, Concept of Increment.
27:05 The Role of a Counter in Computing. The Problem of Sequential Value Enumeration.
27:12 How Does a Mobile Device Screen (Video Card) Work? Display Buffer, Frame Rate, RAMDAC.
28:05 Multiplexer Logic Element. Switching Problems in Computer Engineering.
29:16 "Running Lights" Garland Switch Using Logic Elements. 29:29 K155LA3 master oscillator. Multivibrator, buffer element.
31:14 K155TM2 counter with two D-flip-flops. Frequency divider. Enumeration of binary values from 0 to 3.
33:10 K155LA3 2-input to 4-output decoder. Inverse "running flame" at the decoder output.
33:33 K155LA8 open collector buffer chip. Thyristor inversion and control.
34:00 KU201L thyristors. Load switching in AC circuits. What is the difference between a thyristor and a transistor?
34:36 5V power supply for TTL logic. Parametric regulator. Power lines for logic elements.
35:11 Thanks for watching the video!
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