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AS Coursework Ab - Research from two Named Sources

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AS Coursework:
Intro
Aa
Ab
Ac
Ad
Ae, Ca
Af
Ag
Ba
Bb
Bc
Bd
Be
Bf
Bg
Bh, Bi
Cb, Cc
Cd
Ce
Cf
Da
Db
Dc

Ab
Carry out relevant research from at least two named sources.
Provide well-documented information from at least two separate sources whose full details are recorded.

For example, you need a 555 Astable.
Get the 555 data sheet from the National Semiconductor website.
Make screen shots of the 555 chip pin layout and the astable circuit diagram.
Note down the range of voltages 555 chips will work on.
Note down the formula you need to calculate your astable frequency.
Add all this information to your report including the web address.
Add this source to your bibliography in section D c.
DO NOT include the entire data sheet in your report!
Repeat these steps for each active device you are using.

Here is one example ...

Example Work for Ab