1) mouse is a) output unit b) input unit c) storage unit d) system unit 2) Monitor is a) output unit b) input unit c) storage unit d) system unit 3) flash memory a) output unit b) input unit c) storage unit d) system unit 4) touch screen is a) output unit b) input unit c) input and output unit d) non of all 5) printer is a) output unit b) input unit c) storage unit d) system unit 6) the measuring unit of storage capacity is a) HZ b) Byte 7) measurment unit of processor speed is a) HZ b) Byte 8) The memory that keeps it's data temporarily a) ROM b) RAM c) flash memory d) all mentioned 9) the memory that called work memory a) ROM b) RAM c) both of them 10) the memory that keeps it's data permanantly a) ROM b) RAM c) both of them 11) the memory that lost its contents when the electricity turns off a) ROM b) RAM c) flash memory 12) The unit that responsible for doing any logical and arthematical processes a) main memory b) CPU c) mother board d) keyboard 13) the processor (CPU) contains a) ALU b) CU c) ALU&CU d) non of all 14) the programs that only available for programers a) open source programs b) closed source programs 15) the programs which available for free a) open source programs b) closed source programs 16) the programs that used only after getting the license a) open source programs b) closed source programs 17) the programs which it's source code is available for all a) open  source programs b) closed source programs 18) It is an expermintly copy for the original software with limited timer a) freeware b) shareware c) hardware d) humanware 19) the responsible company let's the user make full use of it for free in a) free ware b) share ware c) humanware d) hardware 20) from the main components of computer system a) open source programs b) hardware c) freeware d) shareware 21) humanware a) system unit b) computer c) programmer d) terabyte 22) Bits takes the value of a) "1 "or "1" b) "0" or "1" c) "0" or "0" d) all of the previous 23) ..........from the processor cosists a) windows b) Control Unit c) Arithmetic and Logic unit d) (b) and (c) 24) when convert from the Byte to Bit , a) multiply in 8 b) multibly in 1024 c) divided by 8 d) divided by 1024 25) .......can be text,image,video a) closed source b) information c) hardware d) data 26) From the components of the system unit a) Output unit b) Mother board c) Software d) Humanware 27) The measuring unit of the processor speed a) Byte b) Bit c) Hz

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