CS609 System Programming VU Assignment No. 3 Spring June 2012 Solution

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Part a) 08 Marks

Refer to section Computer to Computer connectivity via PPI in your course handouts…You have studied in this course that using parallel port, we can transmit One Byte at once and thus it is faster than serial communication. You can also find the details of the procedure that describes how to achieve communication via parallel port between two computers. It is amazing to see that in this protocol, Byte is not transmitted as a whole; rather it is transmitted in the form of Nibbles. You are required to answer the following question.

Is it possible to transmit One Byte data at once via PPI between two computers? If yes then How and if not then why?



Part b)

12 Marks

Represent the following given digital numbers in packed BCD format and also tell how much memory (Bytes) will be required for its storage. Give answers by filling the following table with desired information.

S.No.

Given Number

Required memory (Bytes) in ASCII

BCD representation in Hexadecimal format

Required memory (Bytes) in packed BCD

1. 0×123456 (in Hexadecimal)
2 123456 (in Decimal)