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The buffer register is also called the buffer, which is the input buffer and the output buffer. The former is a temporary storage of the data sent in so that the processor can take it away. The latter is used to temporarily store the data that the processor sends to the peripherals. Because the buffer is attached to the data bus, it must have a three-state output function.
Cache memory
Cache memory, or Cache. We know that the data distribution tendency of concentrated than program so obvious, if put in a period of time must address range is frequently accessed information collection from the main wholesale system, when the CPU access to the data, the Cache can directly find the probability, it is an important indicator of the Cache, and the size of the Cache replacement algorithm, application characteristics and other factors. After adding the Cache, the CPU will be able to access the main memory at a budgeted speed, and 64KB Cache can Cache the main memory of 4MB, and the ratio is above 90%. The CPU (the clock cycle is about 10ns), the Cache of 20ns, the RAM of 70ns, and 90% of the hit rate of the CPU is 90% calculated, and the CPU has the period of the main memory: 20 times 0.9 + 70 x 0.1 = 34ns when there is a Cache. When there is no Cache, 70 times 1 is 70 ns. Thus, after the Cache, the speed of the CPU access to main memory greatly improved, but there is a little note that gal Cache only accelerated the speed of the CPU access to main memory, and CPU access to main memory is only part of the whole computer operating, so to increase the Cache on the system overall speed can only be increased by 10 to 20%.
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| Payment Terms︰ | TT/LC |
| Packing︰ | According to the customer request |
| Lead Time︰ | spot goods |
| SKU︰ | 个 |
| Standards Certificate︰ | ISO9001 |
| product parameters︰ | Polyurethane buffer |
| The supplier information︰ | Dafang Group is a professional manufacturer of cranes, electric hoists and steel structures, concentrating on developing, producing and marketing of all types of cranes. The annual outputs are more than 40,000 sets of electric single-girder cranes and electric hoists each, more than 6,000 sets of electric double-girder cranes and gantry cranes each, more than 100,000 tons of steel structures and so on. Dafang Group was founded in 2006 with 230 million register capitals, covering crane machinery production, heavy-duty steel structure manufacturing and modern agriculture business. The company covers an area of 850,000 square meters, and the employees is more than 1,600 now. The operating philosophy of integrity management has never changed since it was founded. Dafang has been honored with more than 100 awards such as: “Contract-honoring and Promise-keeping Enterprise of China” “National Quality Standard Enterprise” “China Quality Award of Machine Industry” “National High-tech Enterprise”. Dafang possess a technical R&D team with nearly 300 people and absorbs top talents in the industry actively. It has obtained a full range of road and bridge product patent group and more than 200 other invention patents. Dafang owns “enterprise technology center “and “road and bridge crane engineering technology center” accepted by the national inspection workstation. Dafang establishes advanced comprehensive "test center" and "smart control center", promotes the upgrading of lifting machinery and steel structures. Dafang developed new electric hoists, European single and double beam, metallurgical casting cranes, 1600T movable formwork, ME800T double main beam gantry cranes, 320T European double girder cranes and other engineering equipment widely used in machinery manufacturing, large steel production, metallurgy, railway, bridge construction, etc. Dafang owns more than 1500 sets of advanced equipment such as 1500t pressure groove machine, slot machine, roller machine, large-sized box beam gantry welder, large-scale CNC boring machine, vertical machining machine, and plasma CNC cutting machine independently designed and manufactured. Dafang has built advanced domestic electrical assembly line workshop, large steel shot blasting pretreatment production line, multiple steel structure heavy steel production lines, and the first practical single beam lean production line in China. Committed to the R&D and manufacture of steel structure products, Dafang Heavy Machinery Co., Ltd. injected new vitality into the Group's development. It owns the steel structure engineering contractor qualification and has successively contributed to Jixi Expressway project, Kaifeng Tokyo Avenue pedestrian overpass project, Liuzhou Baisha Bridge, Zhengzhou High-speed Railway East Station East Plaza steel structure project, Zhengzhou Longhu Forest Park tunnel steel structure project and so on highly recognized by customers. Dafang Group upholds the core value statement of “create value for customer, seek benefit for employee, and accumulate fortune for society” and established Changyuan Industrial Poverty Alleviation and Employment Base to provide thousands of jobs for local people and graduates. Dafang helps poor people and old people in nursing home every year. Relying on the advantages of crane manufacturing and non-standard steel structure manufacturing, Dafang provides customers with systematic solutions. Dafang aims to build company competitiveness with the best service, the fastest delivery, the most convenient installation, the highest cost performance. Relying on the trust and support of customers and the community, bearing the expectation of promoting the national industry, Dafang Group will develop steady and expand into the international market actively. |
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