# comp1003Week2

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1. What does memory act as?
Acts as a temporary storage for all program instructions and data
2. To access an instruction or data, we use what?
To access an instruction or data, we use a memory address.

A memory address simply identifies a location in memory
3. Computer store data in ____.  What does it mean?
• Computers store data in binary.
• This means that every piece of data and instruction is fundamentally the same.

• It also means that, for humans, it is very difficult for us to understand – theoretically though we could program a computer using binary – it would just take a very long time.
• Solution: Use another base and convert as necessary
4. if the decimal system is base-10, what is the range of digits used?
Digits are from 0 to 9
5. What base is the binary system? What digits are used?
• -Binary system is base-2
• -Digits are from 0 and 1
• -Binary system is used in computers to store data (a digit or BIT is on or off).
• -BIT = Binary Digit
6. If we have 8 bits, how many possible combinations of values are there?
if we have 8 bits, we can have 256 combinations (28 = 256, which is also the corresponding value in binary 1 0000 0000)
7. The highest binary value is called what?
The lowest binary value is called what?
We should also note convention

- The highest binary value is called the Most Significant Bit (MSB).

- The lowest binary value is called the Least Significant Bit (LSB)

- The meaning depends on how many bits are being used

- Whether the MSB is on the left or the right depends on the system, so it’s not straight forward
8. How do we convert a binary to a decimal?
What is 1010101010 in binary?
We can also convert a binary value using this rule, we simply add up all the values corresponding

Example, if we had the binary value 1010101010, we can determine the decimal value

- 512 + 128 + 32 + 8 + 2 = 682
 Author: Anonymous ID: 193239 Card Set: comp1003Week2 Updated: 2013-01-16 21:50:28 Tags: computers Folders: Description: This content is about the computer. Show Answers: