Noman Akhter

CENTRAL PROCESSING UNIT / CPU / Microprocessor / Processor : “Central processing unit is the brain of computer. It is also called CPU or processor. Processor is used to process data according to given instructions. It performs arithmetic and logical operations on data. It controls all activities of different parts of a computer. As brain in human body controls all other parts of body and takes decisions, CPU controls all other parts of the computer and their working.”  A CPU has three basic parts: ·           Arithmetic Logic unit ·           Control unit ·           Registers. ARITHMETIC LOGIC UNIT (ALU):  “ALU performs data processing according to given instructions. All computations are done in this unit. ALU is the real place in computer where actual execution of instructions takes place. ALU may be further categori...

NETWORK SECURITY (DR.ADNAN) LECTURE-1 NETWORK SECURITY (DR.ADNAN) LECTURE-2 NETWORK SECURITY (DR.ADNAN) LECTURE-3 NETWORK SECURITY (DR.ADNAN) LECTURE-4(a) NETWORK SECURITY (DR.ADNAN) LECTURE-4 (b) NETWORK SECURITY (DR.ADNAN) LECTURE-5 NETWORK SECURITY (DR.ADNAN) LECTURE-6 NETWORK SECURITY (DR.ADNAN) LECTURE-7 NETWORK SECURITY (DR.ADNAN) LECTURE-8 NETWORK SECURITY (DR.ADNAN) LECTURE-9 NETWORK SECURITY (DR.ADNAN) LECTURE-10

Management information system(MIS) james o'brien chapter No 1 Management information system(MIS) james o'brien chapter No 2 Management information system(MIS) james o'brien chapter No 3 Management information system(MIS) james o'brien chapter No 4 Management information system(MIS) james o'brien chapter No 5 Management information system(MIS) james o'brien chapter No 6

QUIZ QUESTIONS AND ANSWERS 1)How many pins does a SIMM have? a) 50 b) 64 c) 30 or 72 d) 168 2) The various cards in a PC requires  _______ voltage to function. a) AC b) DC 3) What type of hard disk formatting creates FAT (File Allocation Table) ? a) High Level b) Low Level 4) What is the name of the printed circuit board? a) Ram b) Mother Board 5) Which Component of pc maintains data and time a) CMOS RAM b) vRAM 6) IRQ 1 is commonly assigned to: a) it's usually open b) system timer c) real time clock d) keyboard 7) LCD monitor is also known as___________ a) TFT b) CRT 8) How can you tell that a particular ...