Computer Science Word Search With Coding, Binary and Data Lists

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Computer Science Word Search

Find every word hidden in the grid. Words go across and down.

0 of 16 words found

OASEQUENCEIFLTF

DDBHRDQTKROLOOP

EEHSFQFPSEBTARA

CBECONDITIONRWT

OUSNOOAXRLJDRRT

MGEKLFREINEVADE

PROGRAMLNXSOYWR

OCOMPILEGNENRMN

STNOEIDDYSLHBWA

EPEACDDTHYNSGCC

GNALGORITHMYJOA

RQSRINWDIFRNFDU

NTOLFTOJLBITNEG

LVBNHADVARIABLE

TBELEPMEELEXDTE

This grid is wider and taller than its box. Slide it to see every letter.To drag, hold the first letter for a moment, then slide.Keyboard: Tab to the grid, arrow keys to move, Enter on the first and last letter.

AlgorithmALGORITHM
ProgramPROGRAM
CodeCODE
VariableVARIABLE
StringSTRING
ArrayARRAY
SyntaxSYNTAX
CompileCOMPILE
DebugDEBUG
LoopLOOP
ConditionCONDITION
SequenceSEQUENCE
BitBIT
PixelPIXEL
DecomposeDECOMPOSE
PatternPATTERN

16 of 24 words from the Computer Science Terms list.

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Answer key: Computer Science Word Search

OASEQUENCEIFLTF

DDBHRDQTKROLOOP

EEHSFQFPSEBTARA

CBECONDITIONRWT

OUSNOOAXRLJDRRT

MGEKLFREINEVADE

PROGRAMLNXSOYWR

OCOMPILEGNENRMN

STNOEIDDYSLHBWA

EPEACDDTHYNSGCC

GNALGORITHMYJOA

RQSRINWDIFRNFDU

NTOLFTOJLBITNEG

LVBNHADVARIABLE

TBELEPMEELEXDTE

ALGORITHM, PROGRAM, CODE, VARIABLE, STRING, ARRAY, SYNTAX, COMPILE, DEBUG, LOOP, CONDITION, SEQUENCE, BIT, PIXEL, DECOMPOSE, PATTERN

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All 188 words

Writing Code 26

Algorithm A list of clear steps for doing a job. The name comes from a Persian scholar of the 800s.
Argument The actual value handed to a function when it is called.
Array A row of values stored under one name, each with its own numbered place.
Call To make a function do its job by writing its name in your code.
Code Instructions for a computer, written in a language it can follow.
Compile To translate a whole program into a form the machine can run.
Constant A named value that stays the same for the whole run of a program.
Debug To find and fix the mistakes in a program.
Execute To carry out the instructions of a program.
Expression A piece of code, such as 2 + 3, that works out to a single value.
Function A named block of code that does one job and can be used again and again.
Index The number that gives the place of an item in an array.
Integer A whole number, such as 7 or -3, with no fraction part.
Interpreter A tool that runs a program straight from its code, with no compiling first.

Show all 188 words (174 more)

Writing Code, continued

List An ordered group of items kept under one name, which can grow or shrink.
Operator A symbol such as + or < that tells the computer what to do with values.
Parameter A special variable that lets a function receive a value when it is called.
Procedure A named set of steps that a program can use whenever it needs them.
Program A set of instructions that a computer follows to do a job.
Return To hand a result back from a function to the code that called it.
Run To start a program and let it carry out its instructions.
Statement One complete instruction in a program, like a sentence in a story.
String A run of letters, digits or symbols treated as text, such as a name.
Syntax The spelling and grammar rules of a programming language.
Value A piece of data, such as 12 or the word cat, that a variable can hold.
Variable A named place in a program that holds a value, which can change as the program runs.

Loops and Decisions 23

Boolean A kind of value that is either true or false. Named after a mathematician of the 1800s.
Branch One of the paths a program can take after a decision.
Break An order that jumps out of a loop early.
Compare To check two values against each other, as < and > do.
Condition A test, such as score > 10, that a program checks to decide what to do next.
Counter A variable that goes up by one each time a loop runs.
Decision A point where a program picks one path. A flowchart draws it as a diamond.
Else The word that starts what a program does when an if test fails.
Equal Having the same value, the test that the = sign stands for.
Event Something that happens, such as a key press, that a program can respond to.
False The answer a condition gives when it does not hold, as 5 > 9 does.
Gate A tiny circuit that takes in ones and zeros and gives one out, such as AND or OR.
Iterate To repeat a set of steps, as a loop does.
Iteration One pass through the steps of a loop.
Logic Careful reasoning with true and false. Every computer chip is built on it.
Loop A part of a program that runs again and again as long as a condition is true.
Nested Placed inside another of the same kind, like a loop inside a loop.
Repeat To do the same steps over again.
Selection Choosing which steps to run, using if and else.
Sequence Steps carried out one after another, in order.
True The answer a condition gives when it holds, as 5 > 3 does.
Truth table A chart that lists every mix of true and false inputs and the result of each.
While This kind of loop keeps going as long as its condition stays true.

Bits and Bytes 22

ASCII A code that gives every letter and symbol a number. Capital A is 65.
Binary The number system with just two digits: 0 and 1. Computers store everything in it.
Bit The smallest piece of data, a single 0 or 1. The name is short for binary digit.
Byte A group of 8 bits. It can hold any number from 0 to 255.
Checksum A small number worked out from data and sent with it to catch errors.
Compress To make a file smaller so it takes less room or sends faster.
Convert To change a number from one system to another, such as binary to base 10.
Data Facts, numbers, words or pictures that a computer can store and use.
Decode To turn coded information back into a form people can read.
Digit One of the symbols used to write numbers. Binary has only two of them.
Encode To turn information into a code, such as letters into numbers.
Grayscale A picture made only of shades from black to white, with no color.
Hexadecimal The base 16 number system. It uses 0 to 9 and then A to F.
Lossy Describes squeezing a file in a way that throws some data away for good.
Nibble Half a byte: 4 bits, enough for 16 values.
Overflow What happens when a number grows too big for the space set aside to hold it.
Parity Whether a count of 1s is even or odd. One extra bit of it helps catch errors.
Pixel One tiny dot of a picture on a screen. The name is short for picture element.
Represent To stand for something. In binary, 1000001 can stand for the letter A.
Resolution How many pixels a picture has. More of them show finer detail.
Sample One measurement of a sound wave. Thousands each second store the sound as numbers.
Zero One of the two digits of binary. It can stand for off or false.

Organizing Data 22

Chart A picture of data, such as bars or a pie, that makes numbers easy to read.
Collect To gather data by counting, measuring or asking questions.
Database An organized store of data that a computer can search quickly.
Duplicate A second copy of the same record, which a tidy database removes.
Field One kind of fact in a database, such as a name or a birthday.
Filter To show only the items that match a rule and hide the rest.
Infer To work out something new from the data you already have.
Label A name attached to a piece of data that tells what it is.
Megabyte A unit of data: about one million bytes.
Metadata Data about data, such as the date and place a photo was taken.
Organize To arrange data in a clear order so it is easy to find and use.
Outlier A value that sits far away from all the others in a set of data.
Predict To use patterns in data to say what is likely to happen next.
Query A question put to a database to pull out matching facts.
Record One row of a database: all the facts about one person or thing.
Retrieve To find stored data and bring it back.
Sort To put items in order, such as A to Z or smallest to largest.
Store To keep data so that it can be used again later.
Survey A set of questions asked of many people to gather data.
Terabyte A unit of data: about one trillion bytes, or 1,024 gigabytes.
Validate To check that data makes sense before it is stored.
Visualize To turn data into a picture, such as a graph or a map.

Thinking Like a Programmer 24

Abstraction Hiding the details that do not matter so you can focus on the ones that do.
Ambiguous Able to be understood in more than one way. A computer cannot guess what you meant.
Automate To make a machine do a job by itself, with no person doing each step.
Collaborate To work with others on the same project.
Compute To work out an answer by following exact steps.
Decompose To break a big problem into smaller parts that are easier to solve.
Efficient Doing a job with little wasted time, memory or effort.
Flowchart A drawing of boxes and arrows that shows the steps of an algorithm.
Generalize To change a solution so it works for many problems, not only one.
Goal What a program or project is meant to achieve.
Instruction A single order that tells a computer what to do.
Pattern Something that repeats. Spotting one lets you use an old solution again.
Persevere To keep trying when a program does not work the first time.
Precise Exact and clear, the way every order given to a computer has to be.
Pseudocode A plan for a program written in plain words for people, not for a machine.
Refine To improve a solution a little at a time.
Remix To make something new by changing a project someone else shared.
Reuse To take code that was written before and put it to work again.
Rule A statement of what must always happen, which a program can follow.
Simplify To make something easier by removing what is not needed.
Simulate To imitate a real thing on a computer, such as weather or traffic.
Step One single action in a set of instructions.
Trace To follow a program step by step on paper, writing down each value.
Verify To check that a program really does what it is meant to do.

Algorithms and Structures 26

Backtrack To go back a step and try another choice when a path leads nowhere.
Binary search A fast way to find an item in a sorted list by cutting the list in half each time.
Brute force Solving a problem by trying every possible answer in turn.
Bubble sort A slow, simple way to order a list: compare neighbors and swap any that are wrong.
Complexity A measure of how much time or memory an algorithm needs as its job grows.
Conquer To solve each small part of a split problem, then join the answers.
Divide To split a problem into smaller parts, the first half of a famous strategy.
Edge A line that joins two points in a graph.
Graph A set of points joined by lines, used to map links such as roads between towns.
Greedy Describes an algorithm that always takes the choice that looks best right now.
Heuristic A rule of thumb that finds a good answer quickly, though not always the best one.
Leaf A point at the end of a tree of data, with nothing below it.
Linear This search checks every item in turn, from the first to the last.
Linked list A chain of items in which each one points to the next.
Merge This sort splits a list in half, sorts each half and joins them. Invented in 1945.
Node One point in a tree or graph where data is kept.
Path A route from one point of a graph to another.
Pop To take the top item off a stack.
Push To put a new item on top of a stack.
Queue A line of data where the first item in is the first one out.
Recursion Solving a problem with a function that calls itself on a smaller piece.
Root The single starting point at the top of a tree of data.
Stack A pile of data where the last item put on is the first one taken off.
Swap To make two items trade places.
Traverse To visit every point of a tree or graph, one after another.
Tree A way to store data that branches out from one starting point.

Building Software 23

Accessible Made so that everyone can use it, including people with disabilities.
Audience The people a program or project is made for.
Beta An early edition of a program, tried out by people outside the team that made it.
Bias An unfair lean in the results a program gives.
Copyright The legal right of the person who made a work to say who may copy it.
Developer A person who plans and builds programs.
Ethics Questions of right and wrong, such as what a program should be allowed to do.
Feature One useful thing a program can do.
Glitch A small, sudden fault that makes a program behave oddly.
Impact The effect, good or bad, that a new program has on people.
Library A collection of ready-made code that many programs can borrow.
License The written permission that says how a program may be used and shared.
Maintain To keep a program working by fixing and updating it over the years.
Module One part of a program that holds a few procedures and can be built by itself.
Open source Describes programs whose code anyone may read, change and share.
Programmer A person who writes code. The first is often said to be a countess born in 1815.
Readable Easy for another person to follow, as good code should be.
Release To make a finished program available for people to use.
Requirement Something a program must do, agreed before the building starts.
Review To read the code another person wrote and suggest ways to make it better.
Source code The text of a program as its authors wrote it, in a form people can read.
User The person a program is made for, who works with it.
Version One numbered edition of a program, such as 2.1.

Computing Pioneers 22

Babbage Charles, who designed the Difference Engine and the Analytical Engine in the 1800s.
Boole George, whose 1854 book The Laws of Thought turned logic into a kind of algebra.
Bug A mistake in a program. Engineers called faults by this name as far back as the 1870s.
Census A count of every person in a country. Machines first tallied one in the US in 1890.
Compiler A program that translates code written by people into machine language.
ENIAC An electronic computer completed in the United States in 1945.
Hollerith Herman, whose punched card machines counted the 1890 United States census.
Hopper Grace, the US Navy rear admiral whose compiler turned English words into machine code.
Jacquard Joseph Marie, whose weaving machine of 1804 was controlled by a chain of punched cards.
Leibniz Gottfried, whose stepped reckoner was the first calculator to do all four operations.
Lovelace Ada, whose notes on the Analytical Engine hold what is often called the first program.
Mainframe A large, powerful computer that serves many users at once in a big organization.
Moth In about 1947 one was found stuck in a relay of a computer and taped into the log book.
Napier John, the Scot who invented numbered rods, called bones, for multiplying.
Pascal Blaise, who built an adding machine in 1642 to help with the tax work of his father.
Pioneer One of the first people to explore a new field and open it up for others.
Punched card A stiff piece of paper with holes in it that fed data and programs to early machines.
Tabulate To count up and arrange data in a table, as punched card machines once did.
Turing Alan, the English mathematician who in 1936 described an imaginary computing machine.
Vacuum tube A sealed glass part that controlled electric current in early computers. ENIAC had 18,000.
Von Neumann John, whose 1945 report described a computer that keeps its program in memory.
Zuse Konrad, who in 1941 completed the Z3, the first working programmable digital computer.

How this list was compiled: 188 computer science words written for this page. Every spelling was checked in the American Heritage Dictionary, https://www.ahdictionary.com/, on 2026-09-19. Meanings were checked the same day against the K-12 Computer Science Framework glossary, https://k12cs.org/glossary/, and English Wikipedia's glossary of computer science, https://en.wikipedia.org/wiki/Glossary_of_computer_science; the dated facts about people and machines were checked in their own Wikipedia articles. People are named by surname only and every one died in or before 1995. No company, product or programming language is listed. Clues are our own wording. Licence: own work

How it works

From Loop and Byte to Recursion and Hexadecimal, this computer science word search holds 188 computing words in eleven lists. The puzzle already on screen hides 16 of them, such as Algorithm, Debug and Pixel, across and down.

Read the full guide

Match the list to the unit you are teaching

Under the puzzle, Start from a list has a list for each unit. Loops and Decisions holds 23 words, from While and Else to Truth table. Bits and Bytes covers binary, from Nibble to Hexadecimal. Algorithms and Structures suits an older class: Stack, Queue, Recursion, Binary search.

Turn the sheet into a vocabulary quiz

Tick Show clues, not words. Pupils read "A group of 8 bits. It can hold any number from 0 to 255" and hunt for Byte. Computing Pioneers works as a history quiz: its clues carry dates, from an adding machine of 1642 to a computer completed in 1945.

For grades 3 to 5, pick Easy Coding Words: 54 words of 3 to 5 letters, such as Loop, Bug and Byte.
Binary search and 9 more two-word entries are hidden as one run: BINARYSEARCH, TRUTHTABLE.
Keyboard, Monitor and the other parts of the machine are on the computer word search.

Questions and answers

Who is on the Computing Pioneers list?

Twelve surnames, from Napier and Pascal to Turing, Zuse, Von Neumann and Hopper, plus ten words of their time, such as Punched card and Vacuum tube. Jacquard's clue: "Joseph Marie, whose weaving machine of 1804 was controlled by a chain of punched cards."

Which computer science words are on the list?

The 188 words cover writing code, loops and decisions, binary, data, problem solving, algorithms, building software and computing history. No programming language, company or product is named, so the sheet fits any course, from block coding to a first text language.

Why is Moth on a computer science list?

In 1947 the team running an early computer found a moth stuck in a relay and taped it into the log book. Engineers had called faults bugs since at least the 1870s, so the joke wrote itself. Both words are in Computing Pioneers.

How were the spellings and meanings checked?

Every spelling was looked up in the American Heritage Dictionary in September 2026. Meanings follow the K-12 Computer Science Framework glossary and Wikipedia's glossary of computer science, and the dates in the pioneer clues come from Wikipedia, read the same day.

All 188 words

Writing Code 26

Writing Code, continued

Loops and Decisions 23

Bits and Bytes 22

Organizing Data 22

Thinking Like a Programmer 24

Algorithms and Structures 26

Building Software 23

Computing Pioneers 22

How it works

Match the list to the unit you are teaching

Turn the sheet into a vocabulary quiz

Questions and answers

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