describe in your own words how an SR latch works . Your answer must also include a labelled schematic diagram of your SR latch
时间: 2024-02-18 07:05:13 浏览: 29
An SR latch is a basic digital logic circuit that can store a single bit of information. It is made up of two cross-coupled NAND gates, which are connected in such a way that the output of each gate is connected to the input of the other gate. The circuit has two inputs, S and R, which are used to set and reset the latch, respectively.
When S is set to 1, the output of the first NAND gate goes to 0, which is then connected to the input of the second NAND gate. This causes the output of the second NAND gate to go to 1. At this point, the latch has been set and will remain in this state until the R input is activated.
When R is set to 1, the output of the second NAND gate goes to 0, which is then connected to the input of the first NAND gate. This causes the output of the first NAND gate to go to 1. At this point, the latch has been reset and will remain in this state until the S input is activated.
The circuit diagram of an SR latch is shown below:
```
_____
S ---| |
| NAND|--Q
Q'---|_____|
_____
R ---| |
| NAND|--Q'
Q ---|_____|
```
In the diagram, Q and Q' represent the complementary outputs of the latch, whereas S and R are the set and reset inputs, respectively. When both S and R are set to 0, the latch is in an undefined state and the outputs can be either 0 or 1 depending on the initial conditions.