The most widely used 8-bit single-chip microcomputer is of course also the easiest single-chip microcomputer for beginners to learn. It was first introduced by Intel. Due to its typical structure and complete centralized management of bus dedicated registers, numerous logical bit operation functions and rich control-oriented The command system can be called a generation of "classic", laying the foundation for the development of other single-chip microcomputers in the future.
The 51 single-chip microcomputer has become a classic and an easy-to-use single-chip microcomputer mainly has the following characteristics:
characteristic1. From the internal hardware to the software, there is a complete set of bitwise operating systems called bit processors. The processing objects are not words or bytes but bits. It can not only process a bit of some special function registers on the chip, such as transfer, set, clear, test, etc., but also perform bit logic operations. Its functions are very complete and easy to use.
2. At the same time, a dual-function address interval is specially opened in the on-chip RAM interval, which is extremely flexible to use. This function undoubtedly provides users with great convenience.
3. Multiplication and division instructions, which also bring convenience to programming. Many 8-bit single-chip microcomputers do not have the multiplication function. When doing multiplication, a subroutine call must be compiled, which is very inconvenient.
Disadvantage(Although it is a classic, the shortcomings are still obvious)
1. Functions such as AD and EEPROM need to be expanded, which increases the burden of hardware and software
2. Although the I/O pins are simple to use, they have no output capability at high levels. This is also the biggest weakness of the 51 series of MCUs.
3. The running speed is too slow, especially the double data pointer, if it can be improved, it can bring great convenience to programming
4. 51 single-chip microcomputer has poor protection ability, and it is easy to burn the chip
Application range: At present, it is widely used in teaching occasions and occasions where performance requirements are not high.
Most used devices: 8051, 80C51
The utility model provides a disposable electronic cigarette, comprising: a hollow shell, the bottom of the shell is provided with a lower cover; the shell contains an atomizer, and the outer side of the atomizer is sheathed with a disposable cigarette A bomb, a microphone cover is arranged under the atomizer, a microphone is covered under the microphone cover, a battery is arranged on one side of the atomizer, and an upper cover is arranged on the top of the casing; The atomizer includes an atomizing core, an oil-absorbing cotton sleeved on the outside of the atomizing core, and an atomizer outer tube sleeved on the outside of the oil-absorbing cotton. The disposable electronic cigarette provided by the utility model absorbs the smoke oil on the surface through the absorbing cotton, and then atomizes the smoke through the atomizing core, which greatly reduces the risk of oil leakage, at the same time, reduces the burning of cotton and ensures the smoking taste.The utility model provides a disposable electronic cigarette, comprising: a hollow shell, the bottom of the shell is provided with a lower cover; the shell contains an atomizer, and the outer side of the atomizer is sheathed with a disposable cigarette A bomb, a microphone cover is arranged under the atomizer, a microphone is covered under the microphone cover, a battery is arranged on one side of the atomizer, and an upper cover is arranged on the top of the casing; The atomizer includes an atomizing core, an oil-absorbing cotton sleeved on the outside of the atomizing core, and an atomizer outer tube sleeved on the outside of the oil-absorbing cotton. The disposable electronic cigarette provided by the utility model absorbs the smoke oil on the surface through the absorbing cotton, and then atomizes the smoke through the atomizing core, which greatly reduces the risk of oil leakage, at the same time, reduces the burning of cotton and ensures the smoking taste.The utility model provides a disposable electronic cigarette, comprising: a hollow shell, the bottom of the shell is provided with a lower cover; the shell contains an atomizer, and the outer side of the atomizer is sheathed with a disposable cigarette A bomb, a microphone cover is arranged under the atomizer, a microphone is covered under the microphone cover, a battery is arranged on one side of the atomizer, and an upper cover is arranged on the top of the casing; The atomizer includes an atomizing core, an oil-absorbing cotton sleeved on the outside of the atomizing core, and an atomizer outer tube sleeved on the outside of the oil-absorbing cotton. The disposable electronic cigarette provided by the utility model absorbs the smoke oil on the surface through the absorbing cotton, and then atomizes the smoke through the atomizing core, which greatly reduces the risk of oil leakage, at the same time, reduces the burning of cotton and ensures the smoking taste.
maskking vape,maskking vape price,maskking vape review,maskking vape shop,,maskking vape cost,maskking vape disposable,maskking vape informacion
Suizhou simi intelligent technology development co., LTD , https://www.msmvape.com