Q2: Explain the coding scheme used for encoding Arabic alphabets in the computer.

Q4:

Using 8-bits (including the sign), perform the subtraction of (25 - 23)₁₀ using 2s complement method.

You must show all the steps of your work

** can you please write the blow answer by keyboard don't use hand writing ...

The codung scheme maubly used for encod Arabic alpbabels are- 19 O BCD tede 3) ASCII O UNICODE O BCD code It means bioary coded dlecimal This encodig is based on conversioo of eacb dig of dea maj umber into its equivaleot bindvy number Eaob decimal digit 0o inde pendently be converted ino a bit binar num be eco eqwvalet fe of deumau digits O0000 000I 1 ooi EBCDIc: Gco code is limited for oy e 64 characters To over come this problen c code is extended to EBCDIC Tt means Exlended biare coded decimal oterchange code In tbis 8 e 256 cbaace's cao be rep resenhed I is a 8-bit Code B) ASCIE 1h -LS Ayerron Sh andard code for Informohor interchaoge There are two types ASCIL-8 The fisst 3 bits are used a5 zone bits and rast bits iodicate be digit Io ASCII -81 bit added to the zooe bits SCI- cao represent 27 (138) Charades aod ASCTI& represent (256) characers mersage ooains charackess fiom mwhple Codinq systems, theo it is qite dofficcut to decode that Mesage for nderslanding Hence there is development oe Soqle niversal code system for al Uoicode - anguages io the cworld represes hng siogle chara cr. 2% 2310 using .. 's-complement T+ is deveoped by onicode consorhum It con support- the -characters , from- au Tt coo use cap 10 4 bytes for Coovert 23 ioto binary O coovert 25 ioto bioa 2. 123 2 25 2 12 2. 2. 2. 0 2. (10 ) 0001 O111 C95) (I001)2 93 1o 000) 1OO) steps for subhachioo of oumbes usiog Take s complemeot of bina Add aod 's comple oF if coe get cary tbeo,io I' sublachoo we hav shold add tnis cory discod inis Ca in-- 2,5 -comple subtrachon,-coe. Should ry 0001' 11 l (23) 0001 1001- (25) i's complement is toggling-o, o and I t's Comple of 0001 oiil is comple I11O 100 0 II Jo o o ' comole ooo 00 + I 1 IO 100) corry discorded 0o0l 100 00) Q(0000 o010) (23) lo lo