• DECIMAL NUMBERING SYSTEM
• BINARY NUMBERING SYSTEM
• ASCII & EBCDIC
• GRAPHICS
• WHAT’S INSIDE THE SYSTEM UNIT SUCH AS THE MOTHERBOARD, EXPANSION SLOTS AND CARDS, CPU, POWER SUPPLY, FAN, HARD DRIVE, MEMORY SLOTS, DRIVE BAYS, DVD DRIVE, FLASH MEMORY, USB PORTS
• PROCESSORS SUCH AS CPU’S AND GPU’S
• OPERATING SYSTEMS SUCH AS DOS, WINDOWS, OS X , UNIX, LINUX AND CHROME
• DATABASES 
• PROGRAMMING LANGUAGES
• AUDIO DATA
•  SUCH AS ASSEMBLY AND MACHINE LANGUAGE
• SCRIPTING LANGUAGE LIKE JAVA-SCRIPT
• WEB DEVELOPMENT 
• MICROSOFT ACCESS
• MICROSOFT EXCEL