Wednesday, September
th
16
• Warm Up: Write down how you would explain binary
code to someone who had never heard of it before
• What is this number written in binary code? Now
translate it from binary code to a number. Off Off On
On Off On Off Off.
• Today …
• Please open Intel and Binary assignments
• review binary code assignment
• Review Intel assignment
• Practice Quiz
• Flow Charts
Binary Code
•
•
•
•
•
•
•
•
•
•
•
•
Off Off On On Off On Off Off.
0010100
Translate:
0* 1
0* 2
1*4
0*8
1*16
1*32
0*64
0*128
Value = 52
Binary Answers
• What are the two numbers that computers understand? 0, 1
• If those two numbers are represented by lightbulbs, what is the
value assigned to a bulb that is not turned on? Zero
• What would be another way to write this: On Off On On Off?
10110
• What is the value of the binary number 101? 1100101
• If you convert your name to binary using the encoder, what is the
result?
• If you convert a 5-letter word to binary, how many digits does the
result have? 40 (every letter is represented by 8 numbers)
WHAT DOES MRS. HASSELD
MEAN WHEN SHE SAYS
COMPUTERS ARE DUMB???
INPUT DEVICES
•
•
•
•
•
Microphone
Keyboard
Mouse
PC Camera
Scanner
OUTPUT DEVICES
• Speakers
• Monitor
• Printer
STORAGE DEVICES
•
•
•
•
•
RAM
ROM
Hard Drive
Floppy Drive
Optical Storage
PROCESSING DEVICES
• Microprocessor
• Motherboard
RAM AND ROM
• RAM – Random Access Memory
– Temporary
– Like opening the books on your desk
• ROM - Read Only Memory
– Permanent storage
– Long term
– Contains the computers instructions
– Doesn’t accept new information
Microprocessor vs embedded
processor
• Embedded processor – made for one specific
function
• Microprocessor – bigger, more general, used
by a computer for many functions
Transistor
• Microscopic electronic switch
• Turns on and off
• Part of an integrated circuit within a
computer
• Amplifies and switches electronic signals
Pixels
• Dots on your computer screen
• Red, green or blue
• VGA (video graphic array) translates the
binary code into color combinations
• 96 pixels per inch
What Is a Microprocessor ?
•
•
•
•
CPU or central processing unit
Smaller than a hair
Integrated circuit
Often called the “brains”
Functions of a Microprocessor
• Fetch – get instructions from memory
• Decode- figure out what the instructions
mean
• Execute – perform the instructions