QUESTION 21 What is the difference between electro-mechanical and mechanical in computing? a. mechanically actuated b. electronically actuated c. Cicuit elements are amplified d. executes co-ordinated data QUESTION 22 What RISC processors use a three address instruction format and specify three registers, for example, ADD r1,12,13. O a. ARM and Intel O b. Intel and MIPS O C. ARM and MIPS Od. Intel and IA32 QUESTION 23 What development in the nineteenth century is credited to the construction of computers? a. Printing press b. Telegraph network O c. Hard disk drives d. All of the above QUESTION 24 Who suggested the use of the binary system rather than the decimal numbering system in computing? O a. Babbage O b. Ada O c. Moore s O d. All of the above