Computer Science 101 - az801952.vo.msecnd.net€¦ · Computer Science 101 An Unplugged...
Transcript of Computer Science 101 - az801952.vo.msecnd.net€¦ · Computer Science 101 An Unplugged...
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Computer Science 101
An Unplugged Introduction
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About TechnocampsWe visit schools across Wales and talk about computer science.
We also do “bootcamps" during holidays!
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About TechnocampsWales is part of the United Kingdom (UK). There are 3 Millionpeople living in Wales. We have our own national language: Welsh!
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What is a Computer?
Draw what youthink a Computerlooks like.
You have 5minutes …
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Computers are Everywhere!
And much, much more!
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IT vs. Computer ScienceDo you know the difference between them?
Information Technology:Using computers to do things like wordprocessing and spreadsheets
Computer ScienceProgramming the computer programsand Apps that we use
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What is a STEM subject?
ScienceTechnologyEngineeringMaths
They all link witheach other!
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Fact: Computers aren’t Very Smart!
Why am I calling a computerSILLY?
In order for the computer to doANYTHING it has to be told specificallywhat to do. It needs tasks to be brokendown into simple steps.
I am SILLY!
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Fact: Computers aren’t Very Smart!“Computers are incredibly fast, accurate, andstupid. Human beings are incredibly slow,inaccurate, and brilliant. Together they arepowerful beyond calculation.”
Leo Cherne 1968.
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Let’s put this to the test …
The task:I will be theprogramme. You willeach be one of mycomputers.I will deliver a range ofinstructions. Your tasksis to follow them.
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If I was a robot, howwould you instruct meto …
WalkForward
Followalineonthefloor
Walktothewallandthenstop…beforehittingit!
Findthenearestwall
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Questions?
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Computer Science 101
Extension
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What Language do Computers Understand?
Computers do notunderstand English or anyother spoken language forthat matter.
They understand:
Binary
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Binary Alphabet
We can use Binary torepresent the Englishalphabet!
Using the Binary Alphabetprovided can you writeyour name in Binary?
CAPITAL Binary code
A 01000001
B 01000010
C 01000011
D 01000100
E 01000101
F 01000110
G 01000111
H 01001000
I 01001001
J 01001010
K 01001011
L 01001100
M 01001101
N 01001110
O 01001111
P 01010000
Q 01010001
R 01010010
S 01010011
T 01010100
U 01010101
V 01010110
W 01010111
X 01011000
Y 01011001
Z 01011010
Lowercase Binary code
a 01100001
b 01100010
c 01100011
d 01100100
e 01100101
f 01100110
g 01100111
h 01101000
i 01101001
j 01101010
k 01101011
l 01101100
m 01101101
n 01101110
o 01101111
p 01110000
q 01110001
r 01110010
s 01110011
t 01110100
u 01110101
v 01110110
w 01110111
x 01111000
y 01111001
z 01111010