Watch presentation Computer Hardware Wngg.

1. WELCOMES YOU ITS o urce Academy Of Computer

2. A+ (Hardware)

15. Types of Portable PCs Laptops Notebooks Subnotebooks Palmtops Portable PCs vary in size and features. One type of portable PC is the laptop that is comparable to a briefcase in size and structure. Notebooks and sub notebooks are smaller versions of laptops. The palmtop is small enough to be held in the palm of the hand. Example are as follow:-

40. Different Between Window XP Professional & Window 2000 Professional ASR No ASR GPO No GPO Workgroup and domain member Workgroup Member Support 2 Processor Support1 Processor Encryption No Encryption Yes No Remote desktop Windows XP Profession Windows XP Home

41. Different Between Window XP Professional & Window 98 No Disk Quota Disk Quota No GPO Support GPO Support FAT 16, 32 & NTFS Support FAT 32 & NTFS Support 1 Processor Support 2 Processor No Encryption Support Encryption No Remote Desktop Support Remote desktop Windows 98 Windows XP Professional

42. Different Between Window 95 & Window 98 Support FAT 16, 32 & NTFS Support FAT 16 & FAT 32 Support Direct X No Direct X Multiple Monitor Single Monitor Support USB No USB Support Windows 98 Windows 95

43. Computer System Computer System HARDWARE SOFTWARE FIRMWARE KEYBOARD MOUSE HARD DISK DRIVE FLOPPY DISK DRIVE MOTHERBOARD PROCESSOR RAM CD-ROM SMPS MONITOR PRINTER/SCANNER SYSTEM APPLICATION O.S N.O.S DRIVERS READYMADE TAILORMADE ROM BIOS POST

45. 1.KEYBOARD Keyboard is the primary input device of the PC. You use the keyboard to enter commands and type text. The keyboards on computers are similar to typewriters. However, a computer has many additional keys. Computer keyboards have not changed a lot since they were introduced. The only changes have been additions to the number of keys in the original keyboards. Present day keyboards have 101 or more keys. Each of these keys performs a different operation.

46. Type of Keys

168. TYPE Slot Socket

169. The microprocessor is a chip that accepts data and instruction, processes it and gives the output. An instruction is a calculation that the microprocessor processes such as adding two numbers. One of the key elements of the microprocessor is its speed. The speed of the microprocessor depends on various factors such as the number of instructions it processes, the bandwidth, and the clock speed. The bandwidth specifies the number of binary digits that the microprocessor can process in a single instruction. The clock speed specifies the speed at which the microprocessor processes an instruction. The speed of the microprocessor also depends on the number of the transistors built into the processor. The transistors in the microprocessor boost the data signals on the processor. The more the transistors built on the microprocessor the faster is the speed of the microprocessor. The advancements in technology have reduced the size of the transistors and have increased the processing speed of the processor. Microprocessors may also have a cache to store information. The microprocessor can access information faster from the cache than from the RAM Overview of Microprocessors

195. Memory Primary Memory Secondary Memory ROM RAM HDD FDD PEN Drive ZIP Drive P-ROM EP-ROM EEP-ROM S-RAM D-RAM Synchronous EDO RAM SD-RAM DDR-RAM RD-RAM EDO RAM FPM RAM