3. Hardware - Data Storage: Computer Science CIE IGCSE

How fast can the read/write head move from the centre to the edge and back of a HDD platter?

• 550 times / minute

• 50 times /second

• 7000 times per second

• 1/s

How is data stored in an HDD?

• sectors

• tracks

• pits

• lands

• Flash drives

HDD access time is fast compared to RAM

• True

• False

The time taken for a specific block of data on a data track to rotate around to the read/write head.

• Latency

• Spin time

• Access time

• Run-length

HDD latency is...

• Long

• Short

What can happen to HDDs over time?

Why are HDDs common?

• They are water resistant

• They can withstand shocks

• They are cheap

• They store a lot of data

Keeps track of where everything is on the HDD

• PC

• CIR

• MDR

• OS

What does SSD stand for?

• Silly Sister Dictionary

• Solid State Drive

• Simplex Stratified Digital

• Secure Sockets Device

Stores data by controlling the movement of electrons through NAND and NOR gates.

• Optical Storage

• Solid State Storage

• RAM

• Magnetic storage