![]() ![]() Cache MemoryĬache memory is a random access memory that is integrated into the processor. For doing higher bits (32-bit, 16-bit) operations, it will split that into a series of 8-bit operations. An 8-bit processor will have an 8-bit data bus, 8-bit registers and will do 8-bit processing at a time. Word Length is the number of bits in the internal data bus of a processor or it is the number of bits a processor can process at a time. ADD A, B is used to add two numbers stored in the register A and B. An instruction commands the processor to switch relevant transistors for doing some processing in data. So instruction set is an interface between hardware and software (program). Instruction set is the group of commands that a microprocessor can understand. An 8-bit processor will be using 8-bit wide bus. Usually a microprocessor will have 3 types of buses : Data Bus, Control Bus and Address Bus. BusĪ bus is a set of conductors intended to transmit data, address or control information to different elements in a microprocessor. Here are some common terms that we will use in microprocessor field. Microprocessors are very reliable, failure rate is very less as semiconductor technology is used.ĭevices or computer system made with microprocessors can be made portable due to the small size and low power consumption. So the power consumption is very low compared to others.Ĭompared to vacuum tube devices, semiconductor devices won’t emit that much heat. Microprocessors are usually manufactured using metal oxide semiconductor technology, in which MOSFETs (Metal Oxide Semiconductor Field Effect Transistors) are working in saturation and cut off modes. Microprocessors are very versatile, the same chip can be used for a number of applications by simply changing the program (instructions stored in the memory). This will reduce the size of the entire computer system. It is capable of executing millions of instructions per second.ĭue to very large scale and ultra large scale integration technology, a microprocessor is fabricated in a very less footprint. Microprocessor chips can work at very high speed due to the technology involved in it. Which will reduce the cost of a computer system. Microprocessors are available at low cost due to integrated circuit technology. So basically a microprocessor takes input from input devices, process it as per instructions given in the memory and produces output. As the name indicates, control unit controls the flow of instructions and data throughout the system. which acts as temporary fast access memory locations for processing data. Register array consists of a series of registers like accumulator (A), B, C, D etc. As the name indicates ALU performs all arithmetic and logical operations on the data received from input devices or memory. How does a Microprocessor work ?Ī processor is the brain of a computer which basically consists of Arithmetical and Logical Unit (ALU), Control Unit and Register Array. By using those instructions you can easily solve complex program. Instruction set in a microprocessor are the bricks which you can use to solve your problem. And it will also give you the freedom to make the building in shape and size what you like. Usage of BRICKS will make the construction process simple and cost effective. Sometimes solutions are very complex, circuits also becomes very complex if we try to solve it without programming. It can be programmed to do anything we want based on it’s instruction set and capabilities. So I thought of adding it here such that it will be helpful for all those who read this article.Ī microprocessor is similar to our human brain, it can be trained to do anything. Thank you “B B DWIVEDI” for asking this question in the comment. Block Diagram of a Computer Why we need a Microprocessor ? ![]()
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