1. What do you understand by Digital Abstraction? 2. Give TWO advantages of digital systems. 3. Explain TWO advantages of binary code. 4. Explain TWO applications of weighted binary codes. 5. List the SIX invalid codes associated to BCD codes. 6. List the number systems that computer architecture supports. 7. There are two types of bits in binary number system; name them. 8. What do you understand by Digital Logic Gate? 9. Name the TWO commercially available basic families of digital logic gate 10. What is the basic difference between CPU and GPU? 11. Explain briefly Stored Program Concept. 12. The Von Neumann Architecture computer has five parts; name any FOUR 13. What do you understand by Instruction Set in Digital Electronics? 14. Explain briefly Structural View in Digital System Design Hierarchy. 15. Explain TWO Disadvantages of Digital Systems