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COMMON FEATURES
- Processor:
- in all digital devices
- controls all functions of
the device
- Specialist microprocessors for
different devices.
- microprocessors: central
processing unit (CPU) within
a single chip
- microprocessors: central
processing unit (CPU) within
a single chip
- in all digital devices
- Internal memory
- While microprocessor is working, it needs to store
program instructions and data in internal memory.
- Different devices have different
amounts of internal memory
(bytes)
- While microprocessor is working, it needs to store
program instructions and data in internal memory.
- Digital devices are storage devices.
- In addition to internal memory, there
are components that can store data.
- E.g. computers contain high capacity
hard disk drives to store terabytes of
data.
- hard drive: -main storage -Software and data stored on
computer's hard drive -Bigger the hard drive size, more data can
be stored -Currently measured in gigabytes
- hard drive: -main storage -Software and data stored on
computer's hard drive -Bigger the hard drive size, more data can
be stored -Currently measured in gigabytes
- In addition to internal memory, there
are components that can store data.
- Flash memory
- type of peripheral that is ideal
for portable digital devices
- peripheral: external devices connected
to a computer e.g. printer, microphone
- peripheral: external devices connected
to a computer e.g. printer, microphone
- doesn't
lose data
when
turned off
- no moving parts so cannot be
easily damaged (solid state)
- removable and can be used to
transfer data between devices.
- Micro SD
cards-for smaller
devices
- SDXC (Extended
Capacity) Card-
stores up to 2TB
- USB flash drive - plugs into
USB port -stores up to
256GB
- SDHC (High Capacity) card-
stores up to 32 GB
- Secure Digital (SD) card -stores
up to 4 GB
- type of peripheral that is ideal
for portable digital devices
- WORKED EXAMPLE
Mitch could use a DVD
or CD drive to back
up his video files. a)
State one reason why
DVD is more suitable.
b) Identify one local
storage device, other
than a DVD or CD
drive, that could be
used for backups.
- a) DVD's have a larger storage capacity
b) Memory stick
- Target E
- a) DVD's have a larger storage capacity
b) Memory stick
Media attachments
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