alias (AS) Another name assigned to a column name in the output of query in a database.   Wikipedia         
American Standard Code for Information Interchange (ASCII) A fixed-length binary character-encoding scheme.   Wikipedia         
binary Base 2 number system using 1 and 0. The only language a computer speaks.   Wikipedia  Wikipedia       
bit Smallest unit of data a computer can recognize.   Wikipedia         
buffer Area of memory used to hold data.            
buffer Memory used to store data temporarily.   Wikipedia         
bytes per second (Bps)    Wikipedia         
cache Reduces the main memory access time.   Wikipedia         
character A data type.   Wikipedia         
character encoding    Wikipedia  W3Schools       
charset    W3Schools         
Commodore-64 Scene Data Base (CSDB)             
Compact Disc File System (CDFS)    Wikipedia         
data (information) The smallest form is a bit but can be represented by byte, kilobyte (KB), megabyte (MB), gigabyte (GB), terabyte (TB), petabyte (PB), exabyte (EB), zettabyte (ZB), yottabyte (YB).   Wikipedia         
data structure A way of organizing data.   Wikipedia         
data type A classification identifying the type of data. (i.e.    Wikipedia         
Desktop Services Store (.DS_Store) A hidden file created by Finder in OS X.   Wikipedia         
desktop.ini    Wikipedia         
Digital Linear Tape (DLT) (formerly: CompacTape) Magnetic tape data storage technology. Maximum capacity of 800GB or 160GB in the value line. Developed by Digital Equipment Corporation (DEC) in 1984.  Wikipedia         
Dynamic-Link Library (DLL) Microsoft's implementation of a shared library.   Wikipedia         
exabyte (EB) 1000 petabytes   Wikipedia         
Graphics Interchange Format (GIF)    Wikipedia         
GUID Partition Table (GPT)    Wikipedia         
H.264 Video codec. (AKA: MPEG-4 AVC)   Wikipedia         
hexadecimal (hex) Base-16 number system. Used in IPv6 and MAC addresses. 4 hexadecimal units = 16 binary units. Usually represented in text by the value preceded by 0x.   Wikipedia         
High Performance File System (HPFS)    Wikipedia         
Input/Output (IO)             
integer (int) A data type.   Wikipedia         
ISO 9660 The file system used in compact discs as a standard across multiple operating systems.   Wikipedia         
Kilobit    Wikipedia         
kilobyte (KB) 1024 (1000) bytes.   Wikipedia         
LaserDisc (LD) Type of optical disc with a 0.3 GB capacity. Released December 15, 1978.  Wikipedia         
LDAC Audio codec from Sony that allows up to 990 kbit/s at 24bit/96khz bit rate over Bluetooth.   Website  Wikipedia       
Linear Tape-Open (LTO) Magnetic tape data storage technology. Maximum capacity of 12 TB with the 8th generation as of 2017. LTO-1 released in 2000.  Wikipedia         
Master File Table (MFT) Part of NTFS. All metadata is stored in the MFT.   MSDN  Wikipedia       
megabyte (MB) 1 million bytes.            
memory address Identifies locations in memory with a physical address. Used by a device such as a CPU.   Wikipedia         
Metadata Data that describes other data.   Wikipedia         
null Used to specify no value.            
octal (oct) Base-8 number system.   Wikipedia         
octet Four octets make up an ip address. Each octet has 8 binary bits. For example in 192.168.1.000000001, the 4th or last octet (00000001) is represented in binary.   Wikipedia         
petabyte (PB) 1000 terabytes.            
Portable Network Graphics (PNG) Designed for transferring images on the Internet, not for professional-quality print graphics.   Wikipedia         
read-only (ro) Less overhead.            
sans-serif    Wikipedia         
tebibyte (TiB) (1024 gibibytes = 1,099,511,627,776 bytes) Defined by the International Electrotechnical Commission (IEC)   Wikipedia         
terabyte (TB) 1 trillion bytes.   Wikipedia         
Unicode standard character encoding   Wikipedia         
yottabyte (YB) 1000 zettabytes   Wikipedia