The serial binary adder or bit-serial adder is a digital circuit that performs binaryaddition bit by bit. The serial full adder has three single-bit inputs for the numbers to be added and the carry in. There are two single-bit outputs for the sum and carry out. The carry-in signal is the previously calculated carry-out signal. The addition is performed by adding each bit, lowest to highest, one per clock cycle.
- Serial Subtractor Pdf
- Serial Subtractor Block Diagram
- Serial Subtractor Fsm
- Serial Subtractor State Diagram
Enter your email address to follow this blog and receive notifications of new posts by email. Join 935 other followers. You dont say how many bits, or who to control the add / subtract. One way is do a serial to paralell conversion, run the paralell trough a 74181 ( one for each 4 bits needed) and back to serial. The 74181 will add subrtract, shift and many other functions.
Serial binary addition[edit]
Serial binary addition is done by a flip-flop and a full adder. The flip-flop takes the carry-out signal on each clock cycle and provides its value as the carry-in signal on the next clock cycle. After all of the bits of the input operands have arrived, all of the bits of the sum have come out of the sum output.
Serial binary subtracter[edit]
The serial binary subtracter operates the same as the serial binary adder, except the subtracted number is converted to its two's complement before being added. Alternatively, the number to be subtracted is converted to its ones' complement, by inverting its bits, and the carry flip-flop is initialized to a 1 instead of to 0 as in addition. The ones' complement plus the 1 is the two's complement.
Example of operation[edit]
- X=5, Y=9, Sum=14
- Binary
- 0101+1001=1110
- Addition of each step
| Inputs | Outputs | |||
|---|---|---|---|---|
| Cin | X | Y | Sum | Cout |
| 0 | 1 | 1 | 0 | 1 |
| 1 | 0 | 0 | 1 | 0 |
| 0 | 1 | 0 | 1 | 0 |
| 0 | 0 | 1 | 1 | 0 |
*addition starts from lowest
- Result=1110 or 14
See also[edit]
References[edit]
Further reading[edit]
External links[edit]
- Interactive Serial Adder, Provides the visual logic of the Serial Adder circuit built with Teahlab's Simulator.
To make a full subtractor, you need an XOR and a NAND gate.
How can convert a full adder to a full subtractor?
What is a full subtractor?
Half-Subtractor circuit using NOR gates?
What is the logic circuit for a full adder using only NAND gate?
How Full adder is converted to full subtractor?
Logic circuit forplementation of a full adder using decoder and 2 or gate?
Serial Subtractor Pdf
Can you design or gate using and gate?
What are the major components of a serial full adder circuit?
Circuit diagram of Ex-NOR gate using NAND gate?
Full adder using nand gate?
Why gate circuits are isolated from the main circuit?
Explain what is Combination of half adder and full adder circuit?
What is the flip flop draw the circuit diagrem of all flip flop and explain the working of flip flop using nor gates?
Implement full adder using NOR gate only?
Which gate is a single integrated circuit?
What are NAND and NOR gate in a logic circuit?
Why do you design a full adder using OR gate?
How do you use ic 7432 as an 8 to 3 bit encoder?
What is transmission Gate circuit?
What are universal gates?
Why you use buffer gate in the circuits while you can use direct supply and reduce the complexity of the circuit?
