1. BTEC COMPUTING – UNIT 1 SECTION B - FLOWCHARTS
SECTION A – COMPUTATIONAL THINKING
DECOMPOSITION –
PATTERN RECOGNITION –
ABSTRACTION –
ALGORITHM DESIGN -
SECTION C – PROGRAMMING PARADIGMS
SECTION C – PROGRAMMING PARADIGMS
What is a Variable?
What is a Constant?
Pseudocode: Lists [arrays]
Mathematical Operators
Comparison Operators + == -
>  *
<  /
<> or !=
MOD
>=
DIV
<= ^
Creating A List
names = [“Bob”, “Alex”, “Chris”]
Getting An Item From A List
names[1] this would output Alex
Looping Through A List
for i in name:
output names[i]
Length Of A List
Output (len(names)
Using A Loop To Count The Value Of Items In A List
scores = [5, 12, 5, 7, 8]
total = 0
for i in scores:
total = total + i
Data Types:
String
Integer
Float/Real
Boolean
Casting: Changing the variable from one data type to another. str(3) or int(“3”)
Pseudocode: String Handling
Length Of A String
Getting A Sub String
(Part Of The String)
Change String To Upper Case
Change String To Lower Case
Pseudocode: Functions[returns a value]
Parameters (values sent for function to use)
Name of function
Pseudocode: Iteration
For Loop
[you know how many times you want to loop
for i = 1 to 100:
output (i)
While Loop
[based on a condition]
count = 0
while count < 100:
output(count)
count = count + 1
function triple (number)
return number*3
end function
Pseudocode: Files
Call the Function by using its name and send any parameters in brackets. E.g.:
y=triple(7)
Opening A File
myFile = open(“computing.txt”)
Reading From A File
myFile = openRead(“computing.txt”)
while NOT myFile.endOfFile()
print(myFile.readLine())
endwhile
myFile.close()
Writing To A File
myFile = openWrite(“sample.txt”)
myFile.writeLine(“Hello World”)
Pseudocode: Selection
Pseudocode: Basic
if entry == "a" then
print("You selected A")
elseif entry=="b" then
print("You selected B")
else
print("Unrecognised selection")
endif
name = input (“What is your name”)
output (name)
or joining a string and variable together
output (“your name is:” + name)

2. What is input validation?
BTEC COMPUTING – UNIT 1
SECTION C – PROGRAMMING PARADIGMS
Quick Sort
Bubble Sort
Insertion Sort
How it operates
Advantages
Disadvantages
How it operates
Advantages
Disadvantages
How it operates
Advantages
Disadvantages
SECTION C – VALIDATION
Binary Search
Linear Search
What is input validation?
How it operates
Advantages
Disadvantages
How it operates
Advantages
Disadvantages
Validation technique
Used for
SECTION C – STACKS AND QUEUES
Post Check Actions