0089 专业英语1.Computer hardware is the equipment required for the operation of a computer and consists of components that can be physically processed. The functions of these components are generally divided into 3 main categories: input, output and storage. These types of components are connected to the microprocessor, especially with the central processor of the computer. The latter is the electronic circuit that provides computing power and computer control through the bus called circuit or circuit.3.B2C:Business to CustomerBIOS:Basic Input Output SystemRAM:random access memoryWAN:Wide area network LAN:Local area network5.O2O makes peoples lives more convenient and more selective. Sometimes it can make shopping more fun. So its a business model for a lot of people. At the same time, it is also a phenomenon of social development.Of course, it has a huge impact on the offline entity store, so some people may not like it.