The hardware experiment design board is like this: an independent key and a 4X3 matrix keyboard (a total of 13 keys), using interrupts to scan whether the keyboard is pressed. If a key is pressed, a s
I made a small design about measuring the calorie value of food. The principle is that I weigh the food, and then multiply the weight by the unit calorie value of the food, and finally I can get the c
[p=null, 2, left][size=4]-DSP fixed-point arithmetic[/size][/p][p=null, 2, left][size=4]1 Number calibration[/size][/p][p=null, 2, left][size=4]In fixed-point DSP chips, fixed-point numbers are used f