Page 346 - FUNDAMENTALS OF COMPUTER

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346 Fundamentals of Computers NPP

3.5 Inch Floppy (Microfloppy) 3.5 B§M âbm°nr (_mBH«$moâbm°nr)
In Microfloppy, the magnetic surface is ‘mBH«$moâbm°nr ‘| ‘¡½Zo{Q>H$ ga’o$g H$mo EH$ H$R>moa
inserted into a hard plastic jacket. The tracks ßbmpñQ>H$ O¡Ho$Q> ‘| S>mbm OmVm h¡& Q´>¡³g VWm go³Q>g©
and sectors are similar logical areas as in 5.25”
diskette. The schematic diagram of a 3.5” Floppy 5.25” {S>ñHo$Q> Ho$ g‘mZ hr bm°{OH$b E[a¶m ‘| hmoVm h¡
can be shown as : 3.5” âbm°nr H$m ñHo$‘o{Q>H$ S>m¶J«m‘ {ZåZ àH$ma go Xem©¶m
Om gH$Vm h¡…
Write Protect tab Extra
High
Density
Sensor hole

alignment Metal
Hole Drive
Hub
Plastic
jacket Spindle
Connector
Read/Write
slot inside

Stress
Stress Relief
Notch
Relief
Notch Mettalic Protection Shutter
Following important parts are shown in {ZåZ _hËdnyU© {hñgm| H$mo g_Pm`m J`m h¡…
the diagram:
Jacket (Plastic Protective Covers): This OoHo$Q> (ßbmpñQ>H$ H$m àmoQ>opŠQ>d H$da)
is a square jacket of hard plastic of 3.5”. `h EH$ dJm©H$ma (3.5'') H$R>moa ßbmpñQ>H$ H$m

OoHo$Q> hmoVm h¡, {OgHo$ A§Xa Mw§~H$s` gVh hmoVr h¡Ÿ&
Alignment Hole: No index hole is there in AbmB©Z_|Q> hmob: 3.5'' H$s âbm°nr _| H$moB© B§S>oŠg
3.5”, disk, But Alignment hole is there on metal hmob Zht hmoVm Ÿ& àW_ goŠQ>a H$mo ~VmZo H$m H$m`© AbmB©Z_|Q>
hub, This hole aligns floppy in such a way that
first sector is accessed. hmob H$aVm h¡ Ÿ& `h H|$Ð Ho$ YmVw-h~ _| hmoVm h¡Ÿ&
Read-write Slot: This slot for head is just arS>-amBQ> ñbm°Q>: `h YmVw H$s eQ>a Ho$ ZrMo EH$
below the shutter. When floppy is inserted in Iwbm hþAm {hñgm hmoVm h¡, {Og na hoS> {bIVm-n‹T>Vm h¡&
drive the slot opens for the head.
Write Protect tab: This is a plastic switch amBQ>-àmoQ>oŠQ> Q>o~: `h EH$ ßbmpñQ>H$ H$m ~Q>Z hmoVm
which can be moved in two ways. When the h¡, {Ogo AmgmZr go gaH$m`m Om gH$Vm h¡ & O~ Bg_|
window is transparent floppy becomes read go àH$me Ama-nma hmo OmE Vmo âbm°nr H$m amBQ> H$m`©
only (write protected) but when the window is
closed the floppy becomes read write ~§X hmo OmVm h¡Ÿ&