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Published: Wednesday, 22 July 2020 00:59

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Raspberry 4:

This is the latest and most powerful raspberry pi, released in 2019. It's also known as Raspberry Pi 4B (there is no Raspberry Pi 4A). There are three current Raspberry Pi 4 models that are identical, except for the amount of RAM. Cheapest one at 2GB ram, next one at 4GB ram, and highest performing one at 8GB. Even the 2GB one is powerful enough to work as a desktop. 4GB version suffices for almost any application, as Raspbian OS is very memory efficient, and never exceeds 4GB even with bunch of tabs and processes running. It is powered by a new processor, the Broadcom BCM2711B0, which is built in 28nm, and is based on ARM Cortex-A72 core, instead of earlier ARM Cortex A53 core. it has 4 CPU and clock speed of 1.5GHz. It also has a GPU from Broadcom called VideoCore VI, running at 500MHz.

Installation:

To use Raspberry pi, you will need to raspbian as explained in previous "Raspberry" section. Then you install vncserveer for raspbian, so that you can work on the raspberry w/o having a monitor and keyboard. Once vncserver is running, you access raspberry pi using vncviewer from some other laptop. Now you can start working on this great little machine.

Getting started:

Open a terminal, and type "pinout" cmd. This gives info on all the pins on the header that can be used for our purpose.