philippines inside electric meter pic
then you can count part rotational data
a person can wave a magnet at the front and get a big bill
electricity meters are primarily electromechanical devices
so some amount of residual field will be there
given the nature of this supply magnets and magnetic materials will be come unstable and slowly become depolerized as they rotate in the eddies the wheels drive coils exibit and impart
so like square wheels its just not practicle
the best idea is to drill two small holes one at the top one at the bottom of the shaft 90 at right angles to each other to form a 4 pole switch
2 operations per rotation per sensor
and use a angle mounted opto switch
on both top and bottom of the disk to use the hole to switch them
you can also use the phase differance of the meter
or you can go the whole hog and use a small scale ccd
to read the wheels movements
using magnets in magnetic fields is dense {lol} too many vebers per m2
Added after 23 minutes:
ok back to the actual question
reading data and storing using something like a ds1306 clock
**broken link removed**
youll find lots of project for pic using this chip
try google
https://www.google.co.uk/search?hl=en&q=ds1306+++pic+++projects+--&btnG=Search&meta=
this link yields many
https://www.google.co.uk/search?hl=en&q=ds1306+++projects+--&meta=
**broken link removed**
good c code drivers
as for the pic is a realy easy thing its doing
i think you could use something like a pic 509 even {just 8 pins} serial coms
via shared io {you boot the pic {reset } it first looks for serial handshake if so goes to serial mode for data dump to another display device with rs232 and lcd implimented and maybe some menus etc to set it up for different rates
true 16bit maths and functions /hardware is needed here i think
so use a later pic like 16F630
as it has a large data ram and eeprom support and simple i/os
and enought for the ds1306 and shared rs232 coms via i/r some buttons
an lcd if you like to give user feedback and some nice data menus
for user feedback and its cheep and chearfull