4. Input Unit Output Unit Secondary storage Arithmetic Logic unit Primary storage Control unit

5. Input Unit ACCEPT OR READS INSTRACTIONINSTRACTION CONVERTS IN TO COMPUTER LENG. USE FOR A THE PROCCESSING

6. Output Unit RESULT PRODUCEDBY CMPUTEREASSLY READS INSTRACTIONCONVERTED RESULT TO OUT SIDE WORLD

7. DATA INSTRUTION (RECIVING FROM INPUT DEVICE)INTER MEDIDET RESULT OF PROCCESSING FINAL RESULT OF A PROCCESSING BEFOR THEY ARE RELISED HOLD OR STORE

9. HOLD RUNING PRO. HOLD DATA & SHOW RESULT FAST SMALL CAPACITY EXPENSIV PRIMARY

10. HOLD STORE PRO. HOLD DATA & SAVE SLOW LARGE CAPACITY CHEAPER SECONDARY