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What does memory act as?
Acts as a temporary storage for all program instructions and data

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

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

if the decimal system is base10, what is the range of digits used?
Digits are from 0 to 9

What base is the binary system? What digits are used?
 Binary system is base2
 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

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)

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

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

