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Function of ALU (Arithmetic Logic Unit in Computer) Points : function of alu (arithmetic logic unit in computer) The ALU (Arithmetic Logic Unit): When the control unit encounters and instruction that involves arithmetic or logic operations, it passes control to the second component of CPU, the arithmetic/Logic unit (ALU). Arithmetic operations are as you might except, the fundamental math operations like addition, subtraction, multiplication and division. Logical operations consist of comparisons i.e. two pieces of data are compared to see whether one is equal to (=), less than ( ) the other. They are also used combinations, such as “greater than or equal to”. The ALU also uses specialized storage areas called register in which data is held while operations are performed on it.

Difference between Computer and Calculator Points : difference between computer and calculator Difference between Computer and Calculator Computer Calculator 1. Computer can accept and operate alphabetic data. Calculator can not accept alphabetic data. 2. Computer has large memory for storing programs hind data. Calculator has small memory. 3. Computer has internal storage. It has very small internal storage as compared to computer. 4. It has predefined instruction called, Program. It has no predefined instructions like a program. 5. It performs numeric, arithmetic and logical operations. It performs only numeric and arithmetic calculation.

Parts of CPU Points : Parts of CPU, Control Unit (CU), Arithmetic and Logic Unit (ALU), Registers, Memory Unit (MU) Parts of CPU: i. Control Unit (CU) ii. Arithmetic and Logic Unit (ALU) iii. Registers iv. Memory Unit (MU) Control Unit (CU): Control unit directs and co-ordinates all activity of computer It controls, Time and sequence of operation of computer. input/Output devices. The execution of program. Storage and retrieval of data from memory. Storage and retrieval of’ data from storage devices, Routing of information between memory and (ALU). The direction of arithmetical and logical operation. Arithmetic and Logic Unit (ALU): Arithmetic and logic unit can perform numerical processing of data including addition, subtraction, multiplication and division, It can perform certain logical operation i.e. , ,to make simple decision. Registers: Registers are special storage areas built into microprocessor to. Access data at high speed. Operate on data and to perform tasks. Regist...

Difference Between RAM and ROM Points : difference between ram and rom, ram vs rom Difference Between RAM and ROM RAM ROM 1. RAM is larger and busier of the two. When program and data are joined into the computer they are put in RAM. ROM holds the built-in operating system, basic input output system (BIOS) and utility programs responsible for carrying out computers basic functions. 2. As the name implies, the memory location in RAM can be accessed randomly. These are normally accessed automatically when the computer is turned on. 3. When the contents of RAM are no longer in need, they can be created and replaced instantaneously with other program and data. The contents of ROM can not be changed. As the name implies, it can only be read and not written too. 4. In general RAM is volatile that is information is lost when the power supply is switched off. RAM may be static and dynamic. In general ROM is non-volatile, that is information is not lost when the power supply is switched off....

Memory Unit and its two major types Points : define memory unit and its two major types, read only memory (rom), random access memory (ram) Memory Unit Memory unit is the place where the computer program and data re stored during processing. It is the area, through which all the data which is input into or output of the CPU mist pass. ft is monitored by OU which keeps track of every thing in the storage. It is a random access device, which consists of thousands upon thousands of storage locations, each of which can be directly reached by the CU. Each storage location is distinguished by the address. It is divided into two parts. Read Only Memory (ROM) Random Access Memory (RAM) Read Only Memory (ROM) This part of memory contains permanently stored information. When the power is switched off. ROM does not wash away. This information is available to a computer to read and process but not to be changed is kept on ROM. This information is stored on small pieces of memory chips, befo...

CPU and its different units Points : cpu and its different units, central processing unit (cpu), ? arithmetic and logic unit (alu), centro unit (cu), memory unit (mu), Central Processing Unit (CPU) Central Processing Unit (CPU) is the brain of computer system. We use CPU to control all input and output connections inside arid outside of computer to produce correct answers for the user. it controls and supervises all the units in a computer. It takes information from the input unit and from the memory and uses it according to the instructions already given to the computer. From functional point of view CPU consists of three parts. Arithmetic arid Logic Unit (ALU) Control Unit (CU) * Memory Unit (MU) Arithmetic And Logic Unit (ALU) The ALU in any microprocessor, which provides calculations including addition, subtraction, multiplication and division. It can also perform logical operations like comparing two numbers to see which number is greater than, less than or equal to another nu...

Major Function of Input and Output Devices Points : major function of input and output devices Major Function of Input Device These are physical equipments that read or translate data consisting of alphabets, number or other symbols into electronic impulses, which can be understood by the computer. The purpose of input devices is to pass information into the memory unit of the CPU. It converts the characters letters, numbers and other symbols into binary pattern. Major Function of Output Device: The output devices are physical equipment, which present the out come of the computations and related activities carried out in the CPU so that these can be understood by humans. The purpose of the output devices is to convert data and information expressed in electronic impulses to human understandable forms such as printed report.