Principle, Glossaries
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Principle, GlossariesCommunication
USB
What is USB?
USB: Universal Serial Bus
It is one of the serial interface standards for communicating devices with each other.
Connector shape
USB connectors are classified into 6 types.
There are TypeA, TypeB, Mini-A, Mini-B, Micro-A, Micro-B.
Type A and Type B consist of 4 pins, and the others consist of 5 pins.
TypeA, TypeB
| 1 | 2 | 3 | 4 |
| ＋5V(Power supply) | -D | ＋D | GND |
Mini-A、Mini-B、Micro-A、Micro-B
| 1 | 2 | 3 | 4 | 5 |
| +5V(for power supply＋) | -D | ＋D | ID(for identification) | GND |
signal
USB uses a modulation scheme called NRZI that inverts the output when the data changes from 1 to 0.
Differences in specifications depending on the type
In addition to the connector shape, USB is divided into USB1.1, USB2.0, USB3.0, and USB3.1 standards, and the specifications are different.
| Standard | Transmission speed |
| USB1.1 | 12Mbps |
| USB2.0 | 480Mbps |
| USB3.0 | 5Gbps |
| USB3.1 | 10Gbps |
Product's Category
- Scanning Rangefinder
- Photoelectric Switch
- Sensor for Iron & Steel Industry
- Optical Data Transmission Device
