VT-IC-MA: Vacuum Tubes → Transistors → Integrated Circuits → Microprocessors → AI. Five computer generations in order.
Computer Fundamentals Tricks
SBI POIBPS POSBI Clerk
Items to Memorize
- Computer generations (1st: Vacuum tubes, 2nd: Transistors, 3rd: ICs, 4th: Microprocessors, 5th: AI)
- Memory hierarchy (Register → Cache → RAM → HDD/SSD)
- Network types (PAN → LAN → MAN → WAN)
- OSI Model layers (7 layers)
- Input/Output devices classification
- File extensions (.docx, .xlsx, .pdf, .html)
- Keyboard shortcuts (Ctrl+C, Ctrl+V, Ctrl+Z)
- Database terms (SQL, Table, Record, Field)
Mnemonic Tricks
How It Maps
| Cue | Maps To |
|---|---|
| V (1st Gen, 1940s-50s) | Vacuum Tubes — huge, hot, unreliable (ENIAC, UNIVAC) |
| T (2nd Gen, 1950s-60s) | Transistors — smaller, faster, more reliable |
| IC (3rd Gen, 1960s-70s) | Integrated Circuits — multiple transistors on one chip |
| M (4th Gen, 1970s-present) | Microprocessors — entire CPU on single chip (Intel) |
| A (5th Gen, present-future) | AI — artificial intelligence, machine learning, quantum |
Why It Sticks
Computer generations are asked in almost every banking Mains exam. VT-IC-MA gives you the chronological order instantly.
Please Do Not Throw Sausage Pizza Away — OSI Model layers from bottom to top: Physical, Data Link, Network, Transport, Session, Presentation, Application.
How It Maps
| Cue | Maps To |
|---|---|
| P (Physical) | Cables, signals, bits — hardware layer |
| D (Data Link) | MAC addresses, frames, switches |
| N (Network) | IP addresses, routers, packets |
| T (Transport) | TCP/UDP, ports, segments |
| S (Session) | Session management, authentication |
| P (Presentation) | Encryption, compression, format |
| A (Application) | HTTP, FTP, SMTP — user-facing |
Why It Sticks
OSI layers appear in 2-3 questions per exam. The pizza mnemonic is the fastest way to recall all 7 in order.
Frequently Asked Questions
Is the computer section only in Mains?
Yes, in SBI PO it appears only in Mains as part of 'Reasoning & Computer Aptitude'. Prelims does not have computer questions.
What level of computer knowledge is expected?
Basic awareness — not programming. Focus on: generations, memory types, networking basics, MS Office shortcuts, internet terms, and database fundamentals.