Ict Flashcards
What does INP do?
Go to the INBOX, fetch the value from the user, and put it in the accumulator (calculator)
STA 99
Store the contents of the accumulator in the mailbox 99.
INP
Go to the inbox, fetch the value from the user, and put it in the accumulator (calculator)
ADD 99
Add the value stored in mailbox 99 to whatever value is currently on the accumulator (calculator)
OUT
Copy the value from the accumulator (calculator) to the OUTBOX.
HLT
Stop working.
Input devices
Keyboard, scanner, mouse, USB , microscope, touch screen & web cam
Output devices-
Printer
Headphones
Speaker
Assembly language code-
Get input from user Store this in box 99 Get another input from user Add the contents of box 99 Output this Stop
This section represents the boxes of memory?
Looks black on the right side and the other side has white and the instruction register in the middle
This is what the ‘computer’ is currently doing
Loads of numbers on the right side 000 etc and has RAM on the top
This section is where we write out program for the computer to run.
Black on the left hand side, loads of numbers on the right
These are the input and output areas?
Loads of numbers with two black blocks top and bottom.
Modifying program area?
Looks like an alien thing
CPU- what is the program counter?
Contains the current ‘step’ in the program
