indow":[{"id":"4d5b7f05-f036-4456-9f84-fdb1543fd4f6","revisionId":"efb58907-1254-41d5-881e-6a159dd1bd0a","questionNumber":null,"questionType":"LA","specification":"A graphic artist designs an icon using a restricted color palette. The palette allows each pixel to be one of 32 different colors.","difficulty":3,"difficultyBand":"easy","totalMarks":1,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"15772df0-2aaa-4cb6-afb6-555fa56dcbb5","label":null,"content":"State the minimum number of bits needed to represent the color of a single pixel.","markscheme":"- States $5$ (or shows $2^5 = 32$) B1","marks":1,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"58273ea3-1052-4a25-a3b5-d9e41b900f8f","revisionId":"87be9502-5359-4bb2-b8d2-5de0f9fa14bb","questionNumber":null,"questionType":"LA","specification":"Sign and magnitude and two's complement are two different methods for representing signed integers in binary.","difficulty":3,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"b721a93c-bc41-49a5-9806-8042b6587e65","label":null,"content":"Convert the denary number -75 into an 8-bit binary pattern using sign and magnitude representation.","markscheme":"- Represents the magnitude of $75$ in $7$-bit binary as $1001011$ B1\n- Places the sign bit of $1$ at the most significant bit (MSB) to obtain $11001011$ B1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"58f14c39-9ac0-49df-a628-196586b5182a","revisionId":"e7b048f0-caa3-4a8b-9eed-1163a9f46c1a","questionNumber":null,"questionType":"LA","specification":"A microcontroller register holds the value `1010 1100` as an 8-bit signed binary integer in two's complement.","difficulty":5,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"87c1af96-1c17-447b-b2a8-d75129a3fe18","label":null,"content":"Convert the two's complement binary integer `1010 1100` to its denary equivalent.","markscheme":"- Shows a correct working step, such as writing down the place value addition $-128 + 32 + 8 + 4$ or demonstrating the bit-reversal process to get $84$ before applying the negative sign M1\n- Obtains the correct final denary value $-84$ 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},{"id":"037094a9-2f27-4474-ab2b-f6ffaf800b06","difficultyBand":"easy","calculatorUse":null},{"id":"044288c3-8812-4920-8871-bae451fab7d4","difficultyBand":"medium","calculatorUse":null},{"id":"0c6fa51b-287b-45b1-85bd-eec599f820fa","difficultyBand":"easy","calculatorUse":null},{"id":"10373d61-d8e0-4819-b965-2f7d5aa4b4a5","difficultyBand":"easy","calculatorUse":null},{"id":"156e9f43-4d9e-4b19-9c25-a7e6ebe8c8be","difficultyBand":"easy","calculatorUse":null},{"id":"1b5e1920-0935-451b-bbcf-1d6c941f374f","difficultyBand":"easy","calculatorUse":null},{"id":"23edb657-06e2-4942-92c7-c8fe9165fc20","difficultyBand":"easy","calculatorUse":null},{"id":"252bd0fa-5b9b-4641-9538-07903360a6b4","difficultyBand":"medium","calculatorUse":null},{"id":"28252c5a-c58c-4160-9b25-f3e44b0f5db5","difficultyBand":"easy","calculatorUse":null},{"id":"3fb52ff3-4af5-46d3-9015-b69b85548476","difficultyBand":"easy","calculatorUse":null},{"id":"47bca513-196b-435e-9791-4da3df69fb44","difficultyBand":"easy","calculatorUse":null},{"id":"4946cbf9-a2b6-47b4-9384-1d6f6f30226e","difficultyBand":"easy","calculatorUse":null},{"id":"4abcdb67-924f-4d6a-b355-3d7d4a7c82ca","difficultyBand":"easy","calculatorUse":null},{"id":"4d5b7f05-f036-4456-9f84-fdb1543fd4f6","difficultyBand":"easy","calculatorUse":null},{"id":"58273ea3-1052-4a25-a3b5-d9e41b900f8f","difficultyBand":"easy","calculatorUse":null},{"id

Binary

Question 14

Binary Questions

Binary

Question 14

Binary Questions