All multimeters are equipped with a dial on the front, which not only has several scales corresponding to various measurement items but also includes various symbols, scale lines, and values, as shown in the figure. Correctly reading and understanding these symbols is fundamental to effectively using a multimeter. Letter Symbols and Their Meanings on Multimeters … Read more
Why can the same smartphone connect successfully with some devices but fail with others? Why can the same device connect with some smartphones but not with others? Why does the same smartphone connect quickly with the same device at times and slowly at others? What is a Master? What is a Slave? What are Connection … Read more
If our board only has 4 interfaces: V3.3, SWDIO, SWDCLK, GND. Then the connection relationship with JTAG is shown in the figure below: Pay attention to the direction of the notch. Then GND can be connected to any pin on the left (except for the bottom pin). The 20-core to 4-core wire should be short; … Read more
How to connect Bluetooth headphones to a phone? In today’s increasingly technological society, Bluetooth is becoming more and more popular. Bluetooth originated from King Harald Bluetooth, a Nordic Viking king who unified Denmark and Norway in the 10th century. It is a short-range wireless transmission interface developed by Ericsson, and in 1998, five companies, including … Read more
Bluetooth headphones apply Bluetooth technology to hands-free headsets, allowing users to free themselves from the annoying constraints of wires and easily make calls in various ways. Since the advent of Bluetooth headphones, they have been a great tool for mobile business people to enhance efficiency. When exercising, doing housework, working, or studying, Bluetooth headphones can … Read more
Hello everyone, I amAms, Today I will talk about theTCP/IPThree-Way Handshake and Four-Way Teardown Process Analysis A virtual connection is established through a three-way handshake. 1. (Client) > [SYN] > (Server)IfClientandServerare communicating. WhenClientwants to communicate withServer,Clientfirst sends aSYN (Synchronize)marked packet toServerto request a connection.Note: A SYNpacket is a TCP packet with only the SYN flag … Read more
Bluetooth States and Basic Connection Process 0.1 Bluetooth States: Bluetooth has 5 states: Standby State: No devices are connected, and no data is being transmitted or sent. Advertising State: Periodic advertising state. Scanning State: Actively searching for broadcasting devices. Initiator State: Actively initiating a connection. Connected State: Already connected. 0.2 Bluetooth Connection Process Figure 1 … Read more