Tips and Tricks Computer Organisation www.selectall.wordpress.com krishna kumar bohra LMCST Lachoo Memorial College of Science and Technology

1. Tips Tips Tips Tips Tips Tips Tips and Tips - Computer Organisation Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

2. Q is denoted as Outputq is denoted as Previous Output0 “Disc” means standalone (example: platter, disc inside floppy,…) [IEEE standard]“Disk” means a total unit (eg: Hard disk) “Charge” means active electron Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

3. Capacitors (NVRAM) are having life of 11 years Optimization of System is only when RAM is 1/3rd of CPU Speed We can go for 26 partition of any HDD. (maximum) Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

4. Blank ROM always contain One Speed of Magnetic tap of moving 4.75cm/sec. A study current following in a coil is biased current Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

5. 1 sector of floppy disc contain 500 bytes Floppy rotates at 360 rpm Unformatted Floppy Disc having >2 MB space Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

6. After formatting it will having 1.44 MB (loss of .8MB) CD’s X means 150 Kbps DVD’s X means 1.38 MBps Capacity of Magnetic Drum is 512 bytes (not confirmed) Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

7. DDR 1 266DDR 2 333DDR 4 538DDR 5 733 Sector before formatting Density of inner most circle and outer most is equal Space where data is actually stored Sector after logical formatting Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

8. Mechanism of Write Protect Notch : Light is passing it means permitted to write Light is not passing it means not permitted to write Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

9. Now a Days Paper disc has been launched working on Blu Ray tech. Cache is directly proportional to addressing line of CPU Itanium advanced to Pentium (64 bit processor) Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

10. 733 MB RAM is available (Max.) 1 clock diff. -- Cache3 clock diff. -- RAM(as compared to CPU) Secondary Memory is not directly related to CPU But it is related to IO Processor Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

11. Path of Program:HDD ---- RAM ---- Cache ---- Register(it means 5 instance of program is being created) 733 MB RAM is available (Max.) There are total 256 interrupts :1-16 internal defined 80 documented above that rest all are undocumented Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

12. Latest FSB is available 933 FSB Latest Cache is available L3 We can not speed up the system’s speed by increasing RAM of system, But by that the speed of System does not goes down (it means it is maintained) Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

13. There is no physical connection between tape and coil (Head) Current will be generated in the coil When magnetic tape moves than magnetic field produces induced EMF Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

14. WORM: Write One Read Many WMRM: Write Many Read Many Blu ray (paper disc) capacity in GBs First cd is from SONY of 640 MB (size is 640 due to some reasons) Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com

15. When magnetic tape moves than magnetic field produces induced EMF TAO : Track At Once DAO : Disc At Once 44.1 KHz PCM is for AUDIO (pulse code modulation) Krishna Kumar Bohra (KKB), MCA LMCST www.selectall.wordpress.com