2.  Explain the function of ASCII code  Describe the unit of data measurement: Bit, Bait, KB, MB, GB, TB  Describe the unit of clock speed Megahertz and Gigahertz

3.  ASCII  “ASCII is acronym for American Standard Code for Information Interchange used in most computer to represent letters, number and other characters. ASCII codeSymbolASCII codeSymbolASCII codeSymbol 001100000(48)01000001A(65)00100001!(33) 1(49)01000010B(66)?(63) 2(50)C(67)@(64)

4. 2727 2626 2525 2424 23232 2121 2020 1286432168421 ASCII codeSymbolASCII codeSymbolASCII codeSymbol 001100000(48)01000001A(65)00100001!(33) 1(49)01000010B(66)?(63) 2(50)C(67)@(64) 01000001 -64-----1 64+1=65 == A

5.  Functions of ASCII code:  Make it possible for human to interact with a digital computer  Making it possible for components to communicate with each other successfully

6.  1Kilobyte= 1024bytes or can be said 1KB=1024bytes=2 10 bytes  1Megabyte= 1048576bytes or can be said 1MB=1048576bytes=2 20 bytes  1Gigabyte= 1bytes or can be said 1GB=1073741824bytes=2 30 bytes  1Terabyte= 1bytes or can be said 1TB=1099511627776bytes=2 40 bytes

7. 1KB=2 10 Bytes 1MB=2 20 Bytes 1GB=2 30 Bytes 1TB=2 40 Bytes

8.  Hertz  The clock speed unit is measured in hertz.  “A hertz is one cycle per second”  1hertz= 1cycle/1second  Megahertz  Is 1,000,000cycles/1second  Mega is a prefix that stand for million  Gigahertz  Is 1,000,000,000cycles/1second  1GHZ=1000MHZ