Page 343 - FUNDAMENTALS OF COMPUTER

NPP

NPP Memory 343

wise and anticlockwise direction, representing {Xem _| Mw§~H$s` joÌ CËnÝZ hmoVm h¡ Ÿ& gm_mÝ`V: EH$
0 and 1. The information is stored in a sector.
Normally, 512 Bytes are stored in a sector. There goŠQ>a _| 512 Byte AmVo h¢ Ÿ& Xmo VarH$m| go EH$ Q´>oH$ _|
are two ways by which sectors per track are goŠQ>am| H$s g§»`m V` H$aVo h¢…
decided.
1. Equal sector in all tracks 1. g^r Q´>oH$m| _| g_mZ g§»`m _| goŠQ>a

Sectors

track

In the above diagram each track has eight Cnamoº$ {MÌ _| àË`oH$ Q´>oH$ _| AmR> goŠQ>a h¢Ÿ& A§Xa
sectors. Recording density in inner tracks is dmbo goŠQ>am| _| KZËd A{YH$ hmoJmŸ&
large.
2. Outertracks have more number of sec- 2. ~mhar Q´>oH$ _| A{YH$ goŠQ>a…
tors:

track Sectors
In the above diagram Outmost track has Cnamo³V {MÌ ‘| ~møV_ Q´>oH$ _| 10 goŠQ>a h¢Ÿ&
10 sectors, while innermost has only 4 sectors. bo{H$Z A§Xa dmbo _| {g\©$ 4 hr h¢&
Each sector must be numbered. Therefore àË`oH$ goŠQ>a H$mo Z§~a {X`m OmZm Amdí`H$ h¡Ÿ&
one index hole identify the first sector. Other àW_ goŠQ>a H$mo ~VmZo Ho$ {bE BÝS>oŠg hmob hmoVm h¡Ÿ&
sectors may be numbered in two ways : ~mH$s goŠQ>am| H$mo Xmo àH$ma go Z§~a {X`o Om gH$Vo h¢: