All this traveling of data throughout the whole computer system is controlled by the Control Unit of the CPU.From the main memory, this data is passed to the output unit of the computer system and the user gets it.Now, the processed data is stored in the computer’s main memory and then the memory will decide when to output this data.From the memory, this data is passed to the CPU of the computer system, and in the CPU the ALU does all the necessary arithmetic operations on it with the central processor.In the input unit, the user’s data is passed, then it is converted into the machine-readable form, and then this data is stored in the computer’s memory unit.In the following way, the computer processes the information. are the output devices because from these devices users get their processed data.Īfter learning so much, do you want to draw a block diagram by yourself? Try EdrawMax Now! Visualize, innovate, and collaborate with EdrawMax.įree Download For macOS 10.14 or later How Does the Computer Complete an Instruction Block by Block?įor the step-by-step understanding of how the computer processes the information and outputs it, we have to see the block diagram of the computer system. The computer screen, speakers, printer, etc. The output unit is the place through which the computer system outputs the data. This device is also known as the hard drive of the computer. The secondary storage supports the primary storage. It is the place where the data is stored for a short or a long time. It is a non-volatile and permanent data storage device. Primary storage contains the ROM and RAM of the computer system. This storage part resides in the motherboard. This part of the storage unit holds the data, programs, and instructions that are currently in use. This storage is also known as the main memory of the computer system. The Storage Unit is further classified into two parts. It is the place where the data that is to be processed and processed data is stored. The raw data from the Input unit is saved in the Storage Unit. 05of 08Storage Unit - Primary and the Secondary Unit The CU converts the data into signals and passes it into the central processor. If the data is required then it retrieves it from the Storage Unit and transfers it into the CPU. The CU is smart enough to sense that when the CPU’s central processor needs data and when not. It controls the instructions flowing in and out of the CPU. The Control Unit (CU) is like the traffic guy. The Arithmetic Logical Unit (ALU) is the digital circuit that takes these 0s and 1s and performs the necessary arithmetic operations on it and releases the results as the output asynchronously. We all know that computer understands the language of the binary numbers that is 0 and the 1. The CPU has two components Arithmetic Logical Unit (ALU) and Control Unit (CU). It is also called the heart or brain of the computer without the CPU you just have the useless desktop. The CPU is the primary component that processes the input passed into the computer. All the input data is passed from the input unit to the computer’s storage unit. For example, the mouse-clicked input, button-input, keyboard-input, etc. The input unit is the platform from where the raw data is passed into the computer system. To learn more about a three-way switch, let's look at how a three-way switch works. Two of them are traveler terminals, and one of them, which is a bit darker, is called common. One is the grounding screw that is green, and the other three are parts of the circuit. The components are briefly described below. For processing the data to give output, the computer needs some space to keep the data there and from here the Storage Unit takes the lead. The Central Processing Unit consists of two more parts the Arithmetic and Logical Unit(ALU), and the Control Unit(CU). The main component of the computer system is the Central Processing Unit (CPU).
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