What does Les TTL mean?

In the network, it mainly refers to the TTL value in the ping speed, and the ping command is believed to be familiar to friends who are familiar with the network. In network application, ping network speed and IP address are very common commands, which can know whether the network is unblocked or not or how the network transmission quality is, and are common commands for network technicians to detect the network.

The longer the TTL time and the longer the cache time, the less likely the update will take effect in time. Increase TTL value to save domain name resolution time and speed up website access. If TTL is set smaller, the effective time will be faster, the TTL value will be reduced, and the inaccessible time will be reduced when changing space.

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Generally speaking, TTL gate is faster than CMOS gate. The main factors affecting the working speed of TTL gate circuit are switching characteristics, circuit structure and internal resistance of the internal tube of the circuit. The greater the resistance, the lower the running speed.

The longer the electronic tube is switched on and off, the slower the door works. The speed of the gate is mainly reflected in the transmission delay TPD between the output waveform and the input waveform. The product of TPD and no-load power P is called the product of speed and power, which is an important index to measure the performance of equipment. The smaller this value is, the better the equipment performance (usually around tens of picoseconds (10- 12) joules).

Different from TTL gate circuit, the main factor affecting the working speed of CMOS circuit lies in the outside of the circuit, that is, the load capacitance CL. CL is the main reason that affects the working speed of equipment. The transmission delay of CMOS gate determined by CL is about tens of nanoseconds.

References:

Baidu encyclopedia -TTL