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does your PIC16F887 supports IIC protocol?
if yes then use built in hardware and software like use direct instructions to read and send data to DS1307
if not then please read IIC protocol in detail go through some examples and then try again
you can purchase 2 inch or 3 inch TFT LCD/OLED screen and arduino nano board
then download arduino library for TFT LCD. and you are done. you can easily display text messages, scroll it, animate it etc whatever you want
in proteus if its working means your code/software is OK
some times it happens that the project works fine in proteus simulation but wont work on actual hardware due to hardware problems
to interface 4×4 keypad you dont require any library
it can be easily interfaced with any micro controller
just go through some related examples/projects given on this website
you may find tutorial to interface 4×4 matrix keypad on this website
IC NE555 is the most versetile chip with enoronomous applications. there is one complete section on IC NE555 on this site please visit
OPAMP has enoromous applicatios
amplifier, oscillator, filter, phase-lock-loop, compatrator etc you may go through any good book on OPAMP or may search on google for op-amp applicaitons
for any embedded system application the program that we download (embedded) in to micro-controller that program is known as "firmware"
in micro controller based project you have to program micro controller without downloading program into micro controller, the chip is dead the application wont work
for making programmer you need to download program into master 89S52
how you will manage to download program into this master 89S52? without programmer?
selecting microcontroller for any application depends upon so many criterias.
most common things to think of are
1) requirements of IO line
2) require built in memory for program code
3) required in built peripherals like ADC, SPI, IIC etc
you may choose MCS51 family controller or AVR or arduino
yes, there is TFT LCD library available for arduino. but recommended for arduino boards with more builtin memory with 256K or more
you can use 7 segment driver chip readily available
or you can use micro controller for the same purpose
your program code may be of higher memory capacity than internal ROM of your micro controller
the program address range may be out of internal ROM
