Hardware Reference
In-Depth Information
The different flavors of a Raspberry Pi
The Raspberry Pi Foundation has released four major models of the Raspberry Pi com-
puter. They the are Model A, Model B, Model B+, and Model A+. The Raspberry Pi's CPU
is the Broadcom BCM2835 chip. It contains an ARM processor running at 700 MHz and a
powerful graphics chip. The board features HDMI and Composite (RCA) video outputs,
USB ports, two expansion slots, a Micro USB port for power, and an array of
GPIO
(
General-purpose input/output
) pins to interact with the outside world.
Since all models share the same basic hardware platform, all the examples in this topic are
applicable to all the versions.
Model A
Model A+
Model B
Model B+
USB
1
1
2
4
Ethernet
0
0
1
1
Video out-
puts
HDMI/Composite via
3.5 mm jack
HDMI/Com-
posite
HDMI/Composite via 3.5 mm
jack
HDMI/Composite
Memory 256 MB
256 MB
512 MB
512 MB
Storage
SD card
MicroSD card
SD card
MicroSD card
Power us-
age
300 mA
300 mA
700 mA
600 mA
Price
$25
$20
$35
$35
Newest board. Low
power, low cost, and
much smaller form
factor.
Low cost solution. Does not
have built in Ethernet and it
has only one 1 USB port.
Original board.
Balances fea-
tures and price.
New revision to the B board.
Has a new layout, 4 USB
ports, and more GPIO pins.
Differences
