Operating system terms,terminology, keywords, definitions

Below are mentioned some terminology related to operating systems.
You might  have come across, this shortforms but never knew what they meant.

Here’s the operating system glossary.

API Application Programming Interface
BDA BIOS Data Area
BIOS Basic Input Output System
BP Base Pointer
BPB BIOS Parameter Block
CCP Configuration Control Register
CHS Cylinder Head Sector
DIR Digital Input Register
DMA Direct Memory Access
DSO Downloadable Sub Oliteration
EOF End Of File
EXT extended file system
FAT File Allocation Table
FCB File Control Block
FDC Floppy Drive Controller
FDD Floppy Disk Drive
FLIH First Level Interrupt Handler
FTP File Transfer Protocol
GDT Global Descriptor Table
HAL Hardware Abstraction Table
HDC Hard Disk Controller
HDD Hard Disk Drives
HPFS high performance file system
HTTP Hyper Text Transfer Protocol
IDT Interrupt Descriptor Table
IF Interrupt Flag
IP Internet Protocol
IPC Inter Process Communication
ISA Industry Standard Architecture
ISR Internet Service Routine
IVT Interrupt Vector Table
LBA Logical Block Addressing
LDT Local Descriptor Table
LPC Low Pin Count
LUT Look up Table
LVM logical volume manager
MBR Master Boot Record
MBR memory buffer register
MMU Memory Manage Unit
MSR Main Status Register
NTFS New Table File System
NTFS new TECHNOLOGY file system
NTLDR new technology loader
OCW Operation Command WOrd
OTP One Time Programmable
PAE Physical Address Expansion
PAS Physical Address Space
PC Program Counter
PCB Process Control Block
PCB Printed Circuit Board
PDBR Page Directory Base Register
PDT Page Directory Table
PIC Programmable Interrupt Controller (IC 8259A)
PIT Programmable Interrupt Timer (IC 8254)
PMM Physical Memory Manager
POST power on self test
PPI Programmable Peripheral Interface
PSE Page Size Extension
PSFS polyserve file system
PTE Page Table Entries
SC Stack Counter
SDL Shielded Data Link
SJF shortest job first
SLIH Second Level Interrupt Handler
SP Stack Pointer
STBR segment table base register
TCP Transmission control protocol
TDR Tape Drive Register
TLB Translation Lookaside Buffer
TSR Terminate and Stay Resident
UDP User Datagram Protocol
UFS unix file system
USB Universal Serial Bus
VAS Virtual Address Space
VFS Virtual File System
VMM Virtual Memory Manager
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