This computer science problem involves algorithmic thinking and programming concepts. The solution below explains the approach, logic, and implementation step by step.
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Fresh day IT, let's solve. Here are the answers to the questions: 15. The feature in MS Word that helps you automatically correct common spelling mistakes is Autocorrect. B 16. Communication between a computer and a keyboard primarily involves one-way transmission from the keyboard to the computer, which is Simplex communication. D 17. To find the result of binary multiplication 1010_2 × 1100_2: First, convert to decimal: 1010_2 = 1 · 2^3 + 0 · 2^2 + 1 · 2^1 + 0 · 2^0 = 8 + 0 + 2 + 0 = 10_10 1100_2 = 1 · 2^3 + 1 · 2^2 + 0 · 2^1 + 0 · 2^0 = 8 + 4 + 0 + 0 = 12_10 Multiply the decimal values: 10_10 × 12_10 = 120_10 Convert 120_10 back to binary: 120 ÷ 2 = 60 remainder 0 60 ÷ 2 = 30 remainder 0 30 ÷ 2 = 15 remainder 0 15 ÷ 2 = 7 remainder 1 7 ÷ 2 = 3 remainder 1 3 ÷ 2 = 1 remainder 1 1 ÷ 2 = 0 remainder 1 Reading the remainders from bottom up gives 1111000_2. None of the options exactly match 1111000_2. However, if the question intended to ask for 1010_2 × 110_2: 1010_2 = 10_10 110_2 = 1 · 2^2 + 1 · 2^1 + 0 · 2^0 = 4 + 2 + 0 = 6_10 10_10 × 6_10 = 60_10 Converting 60_10 to binary gives 111100_2, which matches option D. Assuming a typo in the question, the answer is D. 18. The circuit shows an OR gate with inputs A and B, followed by an AND gate with the output of the OR gate and input C. The output of the OR gate is (A + B). The final output Y is the AND of (A + B) and C, which is Y = (A + B) · C. A 19. float, int, and char are basic data types in C language. Num is not a standard basic data type. C 20. ASCII primarily represents data in two standards: ASCII-7 (7-bit, 128 characters) and ASCII-8 (8-bit, 256 characters, also known as Extended ASCII). C 21. A system that records items bought and produces a bill in a supermarket is a Transaction processing system. A 22. The primary goal of project management is to complete the project on time and within budget. D 23. PERT (Program Evaluation and Review Technique) is a technique used to estimate the duration and dependencies of tasks in a project. D 24. A program in computer science is a sequence of instructions that specifies how to perform a computation. D 25. A missing semicolon where one is required in a programming language is a violation of the language's grammar rules, which results in a Syntax error. B 26. Algorithms can be represented as pseudocode, programs, or flowcharts. Syntax refers to the rules of a language, not a representation of an algorithm. B 27. When an algorithm is written in the form of a programming language, it becomes a Program. B 28. Assuming "1110" refers to a binary number 1110_2, its decimal representation is: 1110_2 = 1 · 2^3 +