Difference between revisions of "CS Terms - Getting Started"
(Created page with "=Storage= * bit is 0 or 1, stands for “binary digit” * byte is 8 bits, written for example like 1001 0101 * B - abbreviation for byte * b - abbreviation for bit * KB - kil...") |
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* B - abbreviation for byte | * B - abbreviation for byte | ||
* b - abbreviation for bit | * b - abbreviation for bit | ||
| − | * KB - kilobyte, | + | * KB - kilobyte, 1000 bytes |
| − | * MB - megabyte, | + | * MB - megabyte, 1 million bytes |
| − | * GB - gigabyte, | + | * GB - gigabyte, 1 billion bytes |
| − | * TB - terabyte, | + | * TB - terabyte, 1 trillion bytes |
=Binary/Hex/integer limits= | =Binary/Hex/integer limits= | ||
Revision as of 20:17, 6 January 2020
Storage
- bit is 0 or 1, stands for “binary digit”
- byte is 8 bits, written for example like 1001 0101
- B - abbreviation for byte
- b - abbreviation for bit
- KB - kilobyte, 1000 bytes
- MB - megabyte, 1 million bytes
- GB - gigabyte, 1 billion bytes
- TB - terabyte, 1 trillion bytes
Binary/Hex/integer limits
- 15 = 1111 binary = F hex
- 255 = 1111 1111 binary = FF hex
- unsigned 8 bit integer is at most 255
- signed 8 bit integer is between -128 and 127
- unsigned 32 bit integer ranges from 0 to 232-1, about 4 billion
- signed 32 bit integer ranges from -231 to 231-1, about +/-2 billion
- unsigned k bit integer at most 2k-1
