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Functional unit
Bachelor's of computer Application (BCA) (BCA-102)
University of Calicut
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unctional units area part of a CPU that performs the operations and calculations called for the computer program. A Personal Computer essentially consists of 4 main elements like input Unit, Output Unit, Central Processing Unit Arithmetic Logic Unit, Control Unit, Cacha Memory), Memory Unit (Primary and Secondary The block diagram of the computer is a5 Shown in picture Central Procesting Writ (CPU Domina Unet Minnory Win Mere Recondary Memory Siorage Unit Camera . Then it supplies the deci the procedure is completed, we receive the desiredresulk using suchas printers and monitors. Output Unit: The output unit of a computer produce or generate results with the help of devices or printer, monitor etc. Primarily these instruction or data provided Lo computer system is in binary cade, so to produce or generate the desired output the to convert this data into format. To do 50, it has to first : ample, the data or instruction such as graphics, images or text is inserted in the yale w nthe help of input devices and as the data received fram the inpul. Q s eropartioné to the clock spec, nt of 3 SGigahert? (GH?) , eed Le. of the order of Wp, fetus quess the spen, 4 two numbers in 1g 7 calculations fey Fay Te kafoe neretires. marmeans, He can make day Assuming thathe canwork For 30. ery nerefore. re, it ean be seen that an ordinary can do in 30 life time. The fact eight hours and 365 daysin year Me Wal have gone crazy long before nefinishes employment period Instead of additon be several times worse for human The regen rg nti . ee ore parsaco al ms calculations per (floating point operation per second) or 1271 Ne encomanegaurn alee 2 07 7 and a cenit, ine fo the components of the CPU what and whento it, in) Memory Unit The internal memory tsk. CPU const Spats CPURegister and Cacre ef)is one of a small set ol data holdin fer may hold an m ductor whit? ). EPu and it fe 1S Cannerjandary Cache: This often refers to a further piece of cache memory, whichis located separate chip onthe motherboard close to the CPU, This termis also not commonly because most cache memory is now located onthe CPU die itself, rt , LZ, and L3 are the three types of cache memories, usually located on the modern f ef processor chips and not on the motherboard. The Li cache, or system cache, _ jsthe fastest cache and is always located on the computer processor. The next fastest cache .L2 cache, as well as L3 cache, are also often found on the processor chip and not 7 motherboard (according to current design). Some earlier computers (e, 486 had L? and L3 cache onthe motherboard and evenhad L2 cache expansion boards that could be added to the computer o: as follows: hr The advantages of cache memory are __ Cache memory is faster than main memory. ft consumes less access time as compared to main memory, the program that can be executed within a short period of time it js a collection of storage cells along with associated carcuits 5 ee formation inand out of storage It holds the data and instructions hes _ CPU) needs. Before a program can run, the program is storage medium inte the memory. Also, vate: a program operation some Lee i Camera Scanner
Functional unit
Course: Bachelor's of computer Application (BCA) (BCA-102)
University: University of Calicut
