-5b9b-4641-9538-07903360a6b4","revisionId":"f3ed2068-2c13-456b-9cf6-569805d19c2b","questionNumber":null,"questionType":"LA","specification":"A temperature sensor calibration system receives an unexpected input value of -43 due to a hardware fault.","difficulty":4,"difficultyBand":"medium","totalMarks":3,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"8aecbc27-1aa3-4c6b-a20c-54569cd7e871","label":null,"content":"Convert -43 to two's complement. Use 8-bit binary. Show your working.","markscheme":"- Represents $+43$ in 8-bit binary as $00101011$ OR calculates $256 - 43 = 213$ B1\n- Flips the bits to obtain $11010100$ OR shows partial conversion of $213$ to binary M1\n- Adds $1$ to obtain the final answer $11010101$ OR fully converts $213$ to $11010101$ A1","marks":3,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"bd8ae059-70c5-4fcb-ab54-d57a48b44b7c","revisionId":"4f4e8ea1-745d-4d06-83db-4238c4d4fdb0","questionNumber":null,"questionType":"LA","specification":"","difficulty":4,"difficultyBand":"medium","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"0a0484d4-7a45-490d-8c63-aa079c2672cb","label":null,"content":"Convert the denary number -107 to an 8-bit binary integer using two's complement.","markscheme":"- Converts $+107$ to 8-bit binary to get `01101011` (or flips the bits to get `10010100`, or identifies that $-107 = -128 + 21$) M1\n- Obtains the correct 8-bit binary representation `10010101` A1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null}],"subjectCode":"igcse_computer_science","summaries":[{"id":"0310ee74-a2df-4888-a95b-789551a87471","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"037094a9-2f27-4474-ab2b-f6ffaf800b06","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"044288c3-8812-4920-8871-bae451fab7d4","difficultyBand":"medium","calculatorUse":null,"totalMarks":2},{"id":"0c6fa51b-287b-45b1-85bd-eec599f820fa","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"10373d61-d8e0-4819-b965-2f7d5aa4b4a5","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"156e9f43-4d9e-4b19-9c25-a7e6ebe8c8be","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"1b5e1920-0935-451b-bbcf-1d6c941f374f","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"23edb657-06e2-4942-92c7-c8fe9165fc20","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"252bd0fa-5b9b-4641-9538-07903360a6b4","difficultyBand":"medium","calculatorUse":null,"totalMarks":3},{"id":"28252c5a-c58c-4160-9b25-f3e44b0f5db5","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"3fb52ff3-4af5-46d3-9015-b69b85548476","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"47bca513-196b-435e-9791-4da3df69fb44","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"4946cbf9-a2b6-47b4-9384-1d6f6f30226e","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"4abcdb67-924f-4d6a-b355-3d7d4a7c82ca","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"4d5b7f05-f036-4456-9f84-fdb1543fd4f6","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"58273ea3-1052-4a25-a3b5-d9e41b900f8f","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"58f14c39-9ac0-49df-a628-196586b5182a","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"607c1f65-d207-40ea-9145-fc64b0bf2808","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"64550fb3-21b1-405d-884b-5ed2eee7b8e4","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"6735bf73-c3bb-41b0-8930-b9ed0560aab8","difficultyBand":"easy","calculatorUse":null,"totalMarks":1},{"id":"8be2f6a3-1ca3-41b5-8cd9-cdf754da14bf","difficultyBand":"easy","calculatorUse":null,"totalMarks":2},{"id":"99eb38cd-59cc-46d5-a515-bcfd5d888537","difficultyBand":"ea

Binary

Question 2

Binary Questions

Binary

Question 2

Binary Questions