This device contains four independent gates each of whichperforms the logic NAND function. The open-collector outputsrequire external pull-up resistors for proper logical operation.
[size=4] The impulse to create art is human nature. Sometimes this passion also overflows in the field of science and technology, or it can be said that the trend of science and technology has also ha
151 lights51 lighting is the first choice for many microcontroller beginners, and the difficulty is relatively low.Preparation51 development board (taking STC51 microcontroller as an example)Keil C51,
The data stored in the read-only memory (ROM) is generally written in advance before being installed in the whole machine. During the operation of the whole machine, only the pre-stored data can be re