Chapter 1 - Binary Systems and Hexadecimals Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is the denary system?

A

Number system based on the number 10

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the binary system?

A

Number system based on the number 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the hexadecimal system?

A

Number system based on the number 6

Used for memory dumps, HTML, MAC addresses, web addresses and assembly code/machine code

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How do you convert from binary to denary?

A

Add the powers above the binary number, add up the binary numbers where the 1s appear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How do you convert from denary to binary?

A

Under powers, add 1s from right to left if it can add to the number

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How do you convert from memory sizes?

A

add / divide by 1024

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How do you convert from binary to hexadecimal?

A

convert each group of 4 binary digits to a hex value

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do you convert hexadecimal numbers to binary?

A

convert each letter/number into 4-bit binary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do you convert hexadecimal numbers to denary?

A

Remember the place values and then multiply the hex number by this

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How do you convert denary numbers into hexadecimal numbers?

A

convert from denary to binary to hexadecimal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How is hexadecimal used for memory dumps?

A

allows the contents of the memory to be seen by the writer when developing new software
enabling errors to be detected
also used in diagnostics when a computer malfunction (hex used as it is easier to use than a long string of binary values)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is HTML used for?

A

hypertext markup language used for when writing and developing web pages (uses tags)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is MAC addresses used for?

A

to uniquely identify a device on the internet (can be UAA or LAA)
first 6 digits for manufacturer code

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How is hexadecimal used for web addresses?

A

ASCII codes can replace the URL (which are hex values)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How is hexadecimal used for assembly code / machine code?

A

makes it easier, faster and less error-prone in writing the code in binary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly