What is the use of full subtractor?

The full subtractor is used to subtract three 1-bit numbers A, B, and C, which are minuend, subtrahend, and borrow, respectively. The full subtractor has three input states and two output states i.e., diff and borrow.

How would you implement half adder using decoder?

By connecting an OR gate with output Pin 1 & 2 of 2X4 Decoder. Half Adder can be implemented with 2X4 decoder. Similarly by connecting two Half Adders, we can form a Full Adder by using 2, 2X4 Decoder IC’s.

How can a decoder function as a full subtractor?

As it’s active low output, we get output from NAND gate of difference function as high. The borrow function also turns out to be high. Hence we get the desired output. Now the decoder is functioning as a full subtractor. The hack this influencer used to break the private jet industry. She was able to accomplish all of this with just $250 to start!

What is a full subtractor?

Difficulty Level : Easy Last Updated : 25 Nov, 2019 A full subtractor is a combinational circuit that performs subtraction of two bits, one is minuend and other is subtrahend, taking into account borrow of the previous adjacent lower minuend bit. This circuit has three inputs and two outputs.

What are the three inputs of a decoder?

The three inputs of decoder of course are the first, second and the carry bit which you feed to the subtractor. Next we examine the truth table of the full subtractor.

What are the inputs and outputs of a subtractor?

The three inputs of decoder of course are the first, second and the carry bit which you feed to the subtractor. Next we examine the truth table of the full subtractor. Now we write the minterms for the difference output and borrow output. If the input is 000, output 0 is active, if the input is 001, output 1 is active and so on.

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