Briefly describe the composition and function of the MP 377?
The MP 370 is available in 12″, 15″, 19″ touchscreen versions. The 12″ keyboard version has 38 system keys and 36 function keys with integrated LEDs.
MP 377 is based on Microsoft Windows CE 5.0. Compared with MP 370, its multimedia function has been greatly enhanced. The integrated Microsoft Media Player enables the MP 377 to play video, and Internet Explorer 6.0 for the Pocket PC is pre-installed, extending the way Web pages are displayed.
Microsoft Browser can be used to display Word documents, Excel spreadsheets and PDF documents. The MP 377 has an RS-422/RS-485 interface, two Ethernet interfaces for connection to PROFINET, two USB interfaces, an MMC slot and a CF card slot, and a two-channel audio output.
What are the main features of LwIP?
- Can support IP forwarding under multiple network interfaces;
- Can support ICMP protocol; ·Include experimental extension of UDP (User Datagram Protocol);
- Include congestion control, RTT estimation, fast recovery and fast forwarding TCP (Transmission Control Protocol) );
- Provide specialized Raw API (internal callback interface) for improving application performance;
- Optional Berkeley interface API (used in multi-threaded situations).
At present, what are the world’s well-known programmable logic device manufacturers in addition to the Altera company introduced earlier?
There are also the following well-known manufacturers: Xilinx Company of the United States, the website is: WWW. xilinx. com; Lattice Company of the United States, the website is: WWW. 1attice. com; Actel Corporation of the United States, the website is: WWW. actel. com.
What is a receive buffer?
The receive buffer is the interface between the ACF (acceptance filter) and the CPU, and is used to store the messages received and confirmed from the CAN bus.
The receive buffer (RXB, 13 bytes) can be accessed by the CPU as a window l:l of the receive FIFO (RXFIFO, 64 bytes). With the support of this FIF0, the CPU can receive other messages while processing messages.
Structure of semiconductor varistor type intake pressure sensor：
The semiconductor varistor type intake air pressure sensor is mainly composed of a silicon diaphragm, a vacuum chamber, a silicon cup, a base, a vacuum tube joint and an electrode lead.
What are the logical structures of COS files?
Transparent structure, linear fixed-length structure, linear variable-length structure and fixed-length cyclic structure.
What are the main features of the CC2530?
The main features of CC2530 are as follows.
What is a flexible manufacturing system?
Flexible Manufacturing System (FMS—Flexible Manufacturing System) is a manufacturing system that is centrally controlled and managed by a computer. A system with multiple semi-independent workstations and a material storage and transportation system can independently and efficiently complete the production tasks of various types of small and medium-sized parts at the same time. From the above definition, it should generally include the following elements: standard CNC machine tools or flexible manufacturing cells.
We also call CNC machine tools with automatic loading and unloading functions or multiple stations, processing and assembly types as “manufacturing units”, which are the basic manufacturing units in FMS. A transfer system that transports parts and tools between the CNC machine and the loading station.
A monitoring system that issues commands and coordinates machine, workpiece and tool transfers. Central tool magazine and its management system. Automated warehouses and their management systems. FMS is a very complex system, in the current development process, the combination scheme is various. A simple and small FMS with only the first three elements. A complex and powerful FMS needs some auxiliary equipment in addition to the above five elements.
The composition of flexible manufacturing system: (1) Central management and control computer. (2) Logistics control device. (3) Automated warehouses. (4) Unmanned conveying platform. (5) Manufacturing unit. (6) Central tool library. (7) Clamp station. (8) Information transmission network. (9) Accompanying workbench.
The functional composition of the system: 1) The function of analyzing and grouping parts with group technology as the core. 2) The intelligent function of arranging work plan with microcomputer as the core. 3) With the machining center as the core, the machining function of automatic tool change and workpiece change. 4) The workpiece storage and transportation functions with pallets and transportation systems as the core. 5) Automatic measurement, positioning and protection functions with various automatic detection devices as the core.
The key technology of flexible manufacturing system In the design and planning of flexible manufacturing system, the following key technologies are mainly involved. Including: 1. Monitoring and management system of flexible manufacturing system. 2. Logistics system of flexible manufacturing system. 3. Tool transmission and management system of flexible manufacturing system. 4. Communication networking technology of flexible manufacturing system. 5. Auxiliary system of flexible manufacturing system.
The auxiliary system of FMS consists of cleaning workstation, automatic discharge of cutting fluid, centralized recovery and treatment, and centralized supply of liquid and gas.
What are the data communication width classifications?
- Sensor field bus (data width is bit)
- Device field bus (data width is byte)
- Full service field bus (data width is data stream or block)
What are the components of the RFID system?
It consists of four parts: electronic tag, reader, radio frequency antenna, and background processing computer (Processor).
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