Identify the correct order to complete the paragraph on CPU parts: the part that (i) holds programs and data currently in use is called ___; (ii) performs calculations and logical operations is called ___; and (iii) tells input and output devices how to carry out instructions is called ___.
1.Control Unit
2.ASCII
3.Immediate Access Store
4.ALU
5.SSD
A4, 1, 2
B3, 4, 1 ✓ Correct
C3, 5, 1
D2, 4, 5
Correct answer: (B) 3, 4, 1
Explanation
The three blanks are filled by the immediate access store, the ALU and the control unit in that order.
The immediate access store, or main memory, holds the programs and data currently in use.
The arithmetic logic unit performs all calculations and logical operations.
The control unit directs input and output devices on how to carry out instructions.
ASCII is a character encoding scheme and an SSD is storage, so neither fills these processing roles.
The immediate access store is the CPU's fast working memory, unlike slower permanent storage.
Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.
Practise on Mcqkart →🎓 Book an expert →