Which of the following computer files can be used for updating the master file?
 

(a)i) Define the term computer system.

(i) List the major components of the computer system and give one example of each.

(b)(i) List two activities involved in transferring data into information. (i) Write the following acronyms in full:

(1) EDSAC (11) EDVAC

(a) What is a register?

(b) List two types of register.

(c) State three functions of registers.

(d) Outline three differences between a register and main memory.

(a) What is: (i) an array; (ii) a syntax error?

(b) Write QBASIC program that will input multiples of Three between 1 and 20 into a one-dimensional array and display the output on the screen.

(c) Convert D5FA,, to binary.

(a) Define logic gate.

(b) Give one example each of: (i) standard logic gate; (ii) alternative logic gate.

(c) Using P and Q as inputs and R as output:

(i) draw the logic symbol for an XOR logic gate: (ii) construct the truth table for XOR logic gate.

(d) List two uses of a logic gate.