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It's very similar, and the district is different.
The integration of the instruction set's self and transistors, baicpu is now tens of millions of integrated zhi chips, single-chip microcomputer dao is home appliances, automobiles, some automatic and semi-automatic electrical applications, how many instructions can be there? The 'instruction set' of different types of programs is not the same, and the algorithms for processing ** and data calculation are different, so it is difficult to implement, and the most important thing is that the integration is so high!
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The difference between MCU and CPU:
1. The CPU is the first processor, and its main function is operation and logical relationship processing;
2. The MCU calls back the MCU, which is the micro answering device, and can also be called the "micro logic control unit". In general, a microcontroller contains a CPU, but the computing power is not as powerful as a simple CPU.
Overall, the CPU is a feature. Whereas, a microcontroller is a complete microcomputer system.
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The microcontroller used to be called a microcomputer, but now it is called an MCU (microprocessor), and you should know the relationship with the CPU from the name.
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Intel's 8080 was the first to be designed with this idea in mind.
The processors of copying, the single-chip microcomputers at that time were all 8-bit or 4-bit. The most successful of these was Intel's 8051, on which the MCS51 series microcontroller system was developed. Because it is simple and reliable, it has good performance, and has been highly praised.
Although ARM has developed a high-end microcontroller with a frequency of more than 300M in 32 bits since 2000, until now, single-chip microcomputers based on 8051 are still widely used. In many ways, microcontrollers are more suitable for embedded systems than dedicated processors, so they are widely used. In fact, the single-chip microcomputer is the largest number of processors in the world, and with the development and growth of the single-chip microcomputer family, the development of single-chip microcomputers and dedicated processors has parted ways.
Generally, the registers of microcontrollers are faster than the multi-speed and addressing of computers, and the ARM assembly instructions are generally optimized (that is, the assembly instructions that are not used frequently are canceled).
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The difference between a microcontroller and a CPUDU:
1, CPU is the first place to zhi
The main function of the processor is DAO operation and logical relationship system processing;
2. The right single-chip microcomputer is called MCU, which is a microprocessor, and can also be called a "micro logic control unit". In general, a microcontroller contains a CPU, but the computing power is not as powerful as a simple CPU.
Overall, the CPU is a feature. Whereas, a microcontroller is a complete microcomputer system.
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1. Performance comes.
The processor on the computer is usually called the source CPU, and the single-chip microcomputer is usually called the MCU
of many, because.
ZhiCPU is usually responsible for computing and processing, while MCU is generally used for control and logic, so MCU is less likely to require higher performance.
2. Power consumption. The power consumption of CPUs is generally greater than that of MCUs because computing power and energy consumption are directly proportional. The weak computing power of the MCU is not due to the inability to improve, but because of the design of the cost-effectiveness ratio.
3. Applications.
MCUs are often used for control, while CPUs are widely used for processing.
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Simple arithmetic and logical control.
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Generally speaking, there are three major things on the host of a computer: CPU memory module hard disk CPU is mainly used for arithmetic and logical operations, memory is used to store temporary data, and hard disk is used to install programs.
MCU is the CPU memory RAM program memory ROM and other functional components integrated on a chip of electronic devices, because such a small chip integrates so many functions, so it and desktop computers, the computing power is weak, the memory is relatively small, the program memory capacity is far less than the hard disk, but its size is small, low power consumption ** cheap, the peripheral circuit is simple, so it is widely used in electrical control, so it is also called a microcontroller, compared with the traditional control circuit, the cost is low, powerful and flexibleTherefore, as small as a soymilk machine, a power supply, and as large as a car mobile phone can be controlled by a single-chip microcomputer, because it is too widely used, so there are various models, and the performance is very different.
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The difference between MCU and CPU:
1. The CPU is the first processor, and its main function is operation and logical relationship processing;
2. The single-chip microcomputer is called MCU, which is a microprocessor, and can also be called a "micro logic control unit". In general, a microcontroller contains a CPU, but the computing power is not as powerful as a simple CPU.
Overall, the CPU is a feature. Whereas, a microcontroller is a complete microcomputer system.
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A microcontroller is called a microcomputer, which is a dedicated computer without peripherals, and the CPU is just a processor.
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CPU is just information processing (** processing unit), while the single-chip microcomputer includes a complete set of CPU RAM ROM Timer, counter, parallel IO port, serial port, interrupt control circuit, clock circuit, microprocessor, internal bus, etc.
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The Chinese name of CPU (central processing unit) is ** processor, it is just a processor, and the single-chip computer is equivalent to a computer, it has its own memory, CPU, memory and some peripherals, but its computing speed is much slower than that of common computers.
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These two comparisons don't make much sense, if you have to compare, then you can say that the CPU is integrated in the microcontroller,
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The so-called single-chip microcomputer refers to a single-chip microcomputer, referred to as single-chip microcomputer, which refers to a computer with a certain scale and independent functions that combines CPU memory, clock circuit, timer, counter and various IO interfaces and other components on a large-scale integrated circuit chip.
Therefore, the difference is that the MCU includes the CPU, which has its own independent functions, while the CPU is only a part of the MCU, and the CPU alone is useless.
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The single-chip microcomputer is equivalent to the computer host, without the keyboard and monitor.
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Another popular one is the difference between a pig-killing knife and a knife.
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A microcontroller, as the name suggests, is a computer with a chip.
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Let me tell you this, the computer CPU is mainly used to process a large amount of data, the main characteristics are high speed, high power consumption, ** grid, and a single CPU is not usable, but also with the motherboard, memory and other hardware can be used.
The single-chip microcomputer is equivalent to a miniature version of the whole host, containing small-capacity memory, low-speed CPU and other basic components, the main characteristics are cheap, low power consumption, simple to use (write ** directly connected to the power to work), the main function is to control some simple things, such as alarm clock, washing machine, smart rice cooker, induction cooker, mechanical action control, etc.
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Isn't the CPU a 32-bit high-speed microcontroller, and is the single-chip microcomputer an eight-bit?
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Let's take a look, and take care of me when I first arrived.
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The explanation upstairs is very clear, not image, let's make an analogy: if the microcontroller is a person, the CPU is the brain. Do you feel it?
Microcontrollers (microcontrollers) is a kind of integrated circuit chip, which is a small and perfect microcomputer system composed of a small and perfect microcomputer system composed of a silicon wafer that uses ultra-large-scale integrated circuit technology to integrate the best processor CPU, random access RAM, read-only memory ROM, a variety of IO ports and interrupt systems, timer counters and other functions (which may also include display drive circuits, pulse width modulation circuits, analog multiplexers, AD converters and other circuits) into a silicon wafer. >>>More
Learning single-chip microcomputer is very promising and promising. >>>More
Of course, the CPU is complicated! Otherwise, there wouldn't be just two CPU producers in the world! The schematic diagram is simple, but it is much more complicated to reach the nanoscale semiconductor technology!
Overview of microcontrollers.
1. What is a single-chip microcomputer A computer that can work should be composed of several parts: CPU (for operation and control), RAM (data storage), ROM (program storage), input and output devices (such as: serial port, parallel output port, etc.). >>>More
There are a lot of registers, if you want to learn, you can't ask others like this, because others are not good for you, if you want to study, take a look at this book first, the general book, will introduce its register, has been used. For example, timera has a lot of song registers, tactl, tacctl, tamctl, etc., which are used to configure clock sources, frequency divisions and other configuration information. There are also AD12 registers, door openers, I/O registers, and so on. >>>More