Abbreviation related to computer

1.RAM:-Random Access Memory
2.SRAM:-Static Random Access Memory
3.DRAM:-Dynamic Random Access Memory
4.ROM:-Read Only Memory
5.PROM:-Programmable Read Only Memory
6.EPROM:-Erasable Programmable Read Only Memory
7.EEPROM:-Electrically Erasable Programmable Read Only Memory
8.OMR:-Optical Mark Recognition
9.MICR:-Magnetic Ink Character Recognition
10.CRT:-Cathode Ray Tube
11.LCD:-Liquid Crystal Display
12.TFT:-Thin Film Transistor
13.LED:-Light Emitting Diode
14.USB:-Universal Serial Bus
15.SCSI:-Small Computer System Interface
16.GUI:-Graphical User Interface
17.CUI:-Character User Interface
18.DBMS:-Data Base Management System
19.RTOS:-Real Time Operating System
20.OS:-Operating System