helpA digital camera is a very good example of an embedded system. Cameras that we use today

are smart and have a lot of features that were not present in early cameras all because of

embedded systems used in them. A digital camera has basically $3$ main functions, to capture

image, which we call image data, to store image data, and to represent the image data on display.

Images are stored and processed in digital form hence there is no need of film for storing images.

This feature has increased the storage capacity and made it easy to transfer images. Digital

image is stored in internal memory. When the camera is connected to your personal computer

using a USB cable for uploading images, it transfers the stored data to the connected computer

Some smart digital cameras also have Wifi and Bluetooth connectivity, where users can directly

upload their images to web, or send it to another Bluetooth$-$enabled handphone$/$PC$.$ The camera

uses a rechargeable battery to power up its system.

$($a$)$ Based on the information above, evaluate the suitable controller between Raspberry ${}_i$

and Arduino platforms for the digital camera project. Justify the reasons why you choose

the platform.

$($b$)$ Construct a detailed block diagram in order to plan your digital camera project

execution. The block diagram should contain the input and output devices you that you

need based on the chosen controller platform in Question $5($a$)$

$($c$)$ You decided to upgrade and use a variable$-$focus camera instead of using a fixed$-$focus

camera. To control this focus mechanism automatically, you will need to select a

suitable motor. Explain the reasons why you select the respective motor.

$($d$)$ Now that the hardware design is ready, you move on to the software part. Generally,

there are $3$ types of software used for your digital camera, low level language, high level

language, and machine codes. How will you implement these $3$ types of software with

example into your digital camera system?

$($e$)$ This camera is a digital camera, yet it uses an analog light sensor to detect light. This

analog signal needs to be converted into digital before it can be used by the digital

camera. By producing calculated evidence, distinguish that a $10-$bit resolution analog$-$

digital converter $($ADC$)$ is much more accurate than an $8-$bit resolution ADC.