How to maintain logs from the temperature and humidity sensor

Projects General Guidance
1

I want to maintain the log records from the temperature and humidity sensor. Is there any library which can help me maintaing log records doing this?
The console window in arduino IDE has send button.What is the need of it?

2

Without knowing what temperature- and humidity-sensor you have, it's hard to know whether there already is a library for it. You can use multiple libraries though, once you know how to read the sensors it's possible to log the outcome to SD, EEPROM, store it online etc.

3

Assuming that you can already see what you want to see on the serial monitor, the simplest way of doing this is to use RealTerm instead of the serial monitor. No change to your code is required for this.

RealTerm is a freebie. It can make a CSV file which may then be viewed in Excel. What is particularly useful is that it can date/timestamp your data, using the PC clock.

You can go on, and on, from there - doing it via bluetooth, over the internet, trala-trala, or even dispensing with any communication and saving the data to an on-board SD card instead.

The send button is for sending commands back to Arduino via serial.