Look at the figures and answer the following questions: - Pin 3 in NAND chip is

Question

Look at the figures and answer the following questions:

- Pin 3 in NAND chip is input or output?

- Pin 3 in NOR chip is input or output?

- Pin 11 in NOT chip is input or output?

- How many AND gates that we can use in one (7408) AND chip?

A.3 Programmable Logic 517 14VDD 14VDD 14VDD 1A 4B 6A 1Y 2A 6Y 2A 4Y 10 SY 2B GND7 3A 3Y GND GND 4Y 400 NAND 7402 NOFR 7404 NOT 14VDD 13 12 14VDD 14VDD 1A 13 13 4B 1Y 2A 2A 4Y 2B 2A 4Y 2Y GND7 83YGND 83YGND 7408 AND 7411 AND3 7432 OR 14vDD 1CLR 14 4VDD 1A 2D 2CLR 1B 2C 1CLK 1NC 1PRE 2CLK 2A 4Y 10 10 10 GND 2PRE 2B- 1Y 2A GND7 2Y 20 GND 7421 AND4 7474 FLOP 7486 XOR Figure A.1 Common 74xx-series logic gates

Explanation / Answer

- pin 3 in NAND chip is output.

The reason is in the figure of NAND ,terminal 1 and 2 are input and 3 pin is output of NAND gate.

-pin 3 in NOR chip is input.

The reason is in the figure of NOR, terminal 2 and 3 are input and 1 pin is output of NOR gate.

-pin 11 in NOR chip is input.

The reason is in the figure of NOT, terminal 10 is input and 11 pin is output of NOT gate.

-There are 4 AND gates in 7408

as we can clearly see that this chip has 4 gates that gives 4 outputs.

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