Embedded system refers to Embedded Computer and its application system. It refers to the computer system embedded in various devices and application products. It mainly completes the function of signal control and has small size and compact structure. It provides user interface, management of information input and output, monitoring equipment work, so that equipment and application systems have higher intelligence and cost performance. An embedded system consists of embedded hardware and embedded software. The hardware is buried inside the device in the form of chips, templates, components and controllers, while the software is a real-time multitasking operating system and various special software, which is generally solidified in ROM or flash memory. Software and hardware can be tailored, suitable for the function, volume, cost, reliability, power consumption have strict requirements of the computer system. Embedded computer systems, first seen in arms control in the 1960s and later used in military command and control and communications systems, are now widely used in civilian mechatronics products.

1. The embedded system market at home and abroad is broad

Embedded system is mainly used in various signal processing and control, and has been widely used in various fields of national defense, national economy and social life, and used in enterprises, military, offices, laboratories and individual families and other places.

· Various military weapon control (artillery control, missile control, intelligent bomb guidance and detonation device), various military electronic equipment of land, sea and air for tanks, ships, bombers, radar, electronic countermeasures military communication equipment, and various special equipment for field command and operation. It was widely used from the Gulf War to the recent Iraq War. The earliest embedded computer was used in missile control.
· Household information household appliances, such as digital TV, set-top box, digital camera, VCD, DVD audio equipment, video phone, home network equipment, washing machine, refrigerator, intelligent toys, etc. Using microprocessor microcontroller and embedded software extensively, EMIT has been used for remote meter reading of electricity, water and gas meters and washing machine remote control in communities.

· Various industrial intelligent measuring instruments, numerical control devices, programmable controllers, controllers, distributed control systems, fieldbus instruments and control systems, industrial robots, mechatronic mechanical equipment, automotive electronic equipment, etc. Widely used microprocessor, controller chip level, standard bus template level and system embedded computer.

· All kinds of commercial cash registers, POS systems, electronic scales, bar code reading machines, commercial terminals, bank money counting machines, IC card input equipment, cash machines, automatic teller machines, automatic service terminals, anti-theft systems, all kinds of professional banking peripheral equipment.

· Office photocopiers, printers, fax machines, scanners, laser phototypesetting systems, security monitoring equipment, mobile phones, pagers, personal digital assistants (PDAs), frequency conversion air conditioning equipment, communication terminals, program control switches, network equipment, audio recording and video conferencing equipment, digital audio broadcasting system, etc. Nuwa Hopen embedded software has been used in set-top boxes, Internet TV, telephone, mobile phone, personal digital assistant (PDA).

· Medical electronic equipment Various medical electronic instruments, such as X-ray machine, ultrasonic diagnostic instrument, computed tomography system, cardiac pacemaker, monitor, auxiliary diagnostic system, expert system, etc.

· Embedded system, the core of digital electronic information products, has been exported to Japan. At present, the output of microprocessor microcontroller is several hundred million to more than one billion pieces, which is far larger than the general desktop PC. At present, the global market for embedded system hardware and software development tools is about 200 billion dollars, and the annual industrial output value brought by embedded system reaches one trillion dollars. With the development of global informatization, the embedded system market will grow further.

Chinese information and construction of comprehensive well-off society put forward huge demand for embedded systems market, the annual demand for information household appliances products is hundreds of millions, each kind of digital household appliances have market demand of tens of millions, embedded systems for industrial control has demand of one million sets, commercial embedded systems demand of millions. We already have the mass production capacity of integrated circuits and grade-level products, and the export of embedded application products will also gradually increase and occupy a place in the global market. By 2005, Chinese embedded computer will create billions of yuan of benefits, embedded computer is a new economic growth point of information industry. The domestic and foreign markets provide great scope for our embedded system industry.