The classic discrete difference amplifier design is very simple, what's the complexity of an op amp and a four-resistor network? The classic four-resistor difference amplifier is shown in Figure 1, bu
Hello friend! The project our entrepreneurial team is currently working on is a product that combines health and mobile Internet of Things. It is divided into two parts: hardware and software. The har
I have a Bluetooth speaker that supports fast charging, and I need to test the fast charging function. The test phone is Samsung S7. Everything was normal at the beginning of the test, but when the ph
I am using the MSP430F2274 chip, CCS5.5 version, and the emulator is the MSP-FET430UIF model. When I am debugging, the test connection button is always gray, as shown below. It is always gray regardle
[backcolor=white][size=4][color=#000000]1. Introduction to POP3[/color][/size][/backcolor] [backcolor=white][size=4][color=#000000] POP3, full name is "Post Office Protocol - Version 3", that is, "Pos