Classification
DKAE - Windows
33
DNA - Computer networks, local area networks
24
DKAI - Unix - operating system
17
DKAL - Linux - operating system
16
DOZ - Programming languages - Other
11
DKAT - Computer utilities
8
DMA - Programming
8
DNC - Internet
5
DTAH - MS Exchange, Outlook
4
DWAC - Relational database systems
3
DMC - Computer programs
2
DOL - Programming language - Python
2
DGA - Computer types, plants and organization
1
DKAN - Networks operating systems
1
DOQ - Programming languages - Internet
1
DTA - MS - Office package
1
DVA - Data and file management
1
DWAD - Object oriented database systems
1
YPFB - Efficiency of labour
1