1. Calculate the data compression ratio if you know the original data size is 800 characters and the data size after compression is 704 characters ? 2. Distinguish between ASCII code and Unicode. 3. Which of the following is the right representation of number (-7) in two's complement format? a. 00001010 b. 11110110 c. 00000101 d. 11111001 4. List two type of image format.
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