IB Computer Science Topic 2 - Computer Organization - Statistics

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The average score is 24 of 60

Answer Stats

Definition	Term	% Correct
The "brain" of the computer, processes data to information according to instructions	Central Processing Unit (CPU)	97%
One type of above. Stores executing program instructions and data in unique memory locations that each have address and content. Stored data can be overwritten. Volatile (if power is lost, so are unsaved changes).	Random Access Memory (RAM)	87%
Performs all basic arithmetic, logical, I/O operations	Arithmetic Logic Unit (ALU)	78%
Other type of two rows above. Like above but holds and data cannot be overwritten (even if power is lost) used to boot computer	Read-Only Memory (ROM)	78%
Divided into L1 and L2, small amount of above that holds most commonly used and accessed information from RAM, making computer system faster. Located closer to CPU than RAM	Cache	74%
Controls computer's hardware resources and provides services for computer programs. Examples: Windows, Mac, Linux	Operating System (OS)	64%
Controls retrieval of instructions from primary memory as well as sequence of execution	Control Unit (CU)	61%
Four stages of machine instruction cycle	Fetch (from primary memory to CU)	61%
Uses two digits (0, 1) to represent numbers. Most widely used number system in CS. Examples: 1=1, 10=2, 100=4, …	Binary number system	60%
	Execute (by CPU)	60%
Holds address of where processed data will need to be stored	Memory Address Register (MAR)	60%
Uses 16 digits (0-F), A=10, B=11, …, F=15	Hexadecimal number system	59%
Holds data that will be taken to address that the above is holding.	Memory Data Register (MDR)	59%
	Decode (in CU)	57%
Basic unit of information in computer systems, carries only either 1 or 0. Eight of these make one Byte.	Bit	56%
Both inputs must be true/on	AND	55%
One or both inputs may be true/on	OR	55%
Uses ten digits (0-9) to represent any number regardless of size	Decimal number system	53%
Inverse of operation #2	NOR	53%
Inverse of operation #1	NAND	52%
One input may be true/on but not both	XOR	52%
Inverse of input	NOT	51%
Small location that can hold data	Register	51%
	Store results in primary memory	47%
Whole number	Integer	42%
Character-encoding scheme based on English alphabet. Such characters have values from 0-127, inclusive	ASCII	39%
Directly accessible by CPU, holds both data and instructions that are running on computer system.	Primary memory	38%
Represented with RGB values. Example: 3366CC	Colour	36%
Sequence of characters	String	36%
Allows user to interact with applications in numerous ways.	Graphical User Interface (GUI)	35%
Cache located on processor itself	L1 cache	35%
Cache placed between primary memory and processor	L2 cache	35%
Organizes and analyzes data in rows and columns. Also performs mathematical calculations, financial and statistical operations, and graph creation. Example: Microsoft Excel	Spreadsheet	32%
Preferred for main RAM of computer system	Dynamic RAM (DRAM)	31%
Can access, retrieve, and present content (including web pages, images, videos, etc.) on World Wide Web. Example: Chrome	Web browser	31%
Real electrical circuit simulating boolean operators	Logic gate	30%
May be written to like RAM but non-volatile at the same time. Relatively slow, but high data capacity. Examples of devices: Hard drive, USB, Floppy disc	Secondary memory	30%
Username/password, magnetic cards, biometric, etc.	Security	30%
Faster but more expensive than above	Static RAM (SRAM)	30%
Character-encoding scheme like above but with more symbols and non-English characters	Unicode	29%
Allows exchange of digital messages between author and recipient(s), regardless of whether either is active.	Email	28%
Produces documents. Includes composition, editing, formatting, and sometimes printing. Example: Microsoft Word	Word processor	28%
Organized collection of data and information in the form of rows/records and columns/fields.	Database	27%
Commonly used by engineers and designers, allows creation and modification of a design, which can be viewed from any angle and can convey information on materials and dimensions. Example: Fusion 360	Computer Aided Design (CAD)	25%
Consists of hardware and software components and follows Input, Process, Output, Storage model	Computer system	25%
Commands are typed into it. Example: CMD, Terminal	Command line interface (CLI)	24%
Ensuring that one application does not interfere with memory used by other applications so that the latter does not stop functioning or have its data overwritten.	Memory management	24%
Displays list of commands to be chosen by user to perform various functions	Menu	23%
Installed by manufacturer, aims to complete tasks.	Software application	21%
Represents input and output of complex logical/boolean statements	Truth table	19%
Where buttons, icons, menus, and other I/O elements are placed	Toolbar	17%
Manages, creates, modifies, and extracts information from above. Example: Microsoft Access	Database management system (DBMS)	14%
Communicates information to user, allowing them to respond by choosing an option from specific choices. Example: "Do you want to save changes to …?"	Dialogue box	14%
Managing connections to and interactions with networks of other computer systems to allow sharing of resources	Networking	13%
Responsibility for communicating directly with peripheral devices such as keyboard, monitor, mouse	Peripheral communication	13%
User can edit digital images with tools such as moving, cropping, scaling, and erasing. Example: Photoshop	Graphic processing software	12%
Where positive numbers start with 0 and negative numbers start with 1	Two's complement	12%
Keeping track of files stored in memory and discs, as well as files in use by applications	Disc access	7%
Efficient allocation of resources so that application can run as effectively as possible on computer	Resource monitoring	7%
Keep trace of activity of any user in computer system	Log file	4%

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