bit banging: how it works + examples

Hi Everybody,

I need to do a project with bit banging to get data from an external adc

I'm using msp430g2553 and ccs for this project.

I think i can use SPI but i want to learn.

I new to bit banging and i wanted to know how it works (how we get/send data) and an examples will be great.

Thabnk you all.