Ping signal method:
1. First, we need to enter the game interface, and then on the right side of the game screen, we can see three signal signs.
2. These three signal symbols represent attack, warning and arrival respectively.
3. We can directly hold the content we want to send by hand and drag it to the designated position of the game screen.
4. Above the signal is the chat interface in the game. After 10: 00, you can communicate and type in the office.
Signals are tools and carriers of information.
Broadly speaking, it includes optical signals, acoustic signals and electrical signals. For example, the ancients used the billowing wolf smoke generated by lighting beacon towers to convey the news of enemy invasion to distant troops, which is an optical signal.
When we speak, sound waves will reach other people's ears, so that others can understand our intentions. This is a sound signal.
There are many ways to classify signals, such as mathematical relationship, numerical characteristics, energy and power, processing and analysis, time function characteristics, whether the numerical value is a real number, etc.
It can be divided into deterministic and non-deterministic signals (also called random signals), continuous and discrete signals (namely analog and digital signals), energy signals and power signals, time-domain signals and frequency-domain signals, time-limited signals and frequency-limited signals, real signals and complex signals.