Q1 (a) Describe TWO (2) advantages of DIGITAL over to ANALOG in data storage. (1 mark) (b) As technology enhance, higher space memory becomes necessity for storage purpose. With the help of...

Extracted text: Q1 (a) Describe TWO (2) advantages of DIGITAL over to ANALOG in data storage. (1 mark) (b) As technology enhance, higher space memory becomes necessity for storage purpose. With the help of appropriate diagram, describe how the digital data is stored using optical disc (CD-ROM). (1 mark) (c) Convert the decimal number 458 into following numbers by showing all the steps. i. Octal number (2 marks) ii. Hexadecimal number (2 marks) iii. Binary number (2 marks) iv. Gray code (2 marks)