Electronic device and control method thereof

The invention discloses an electronic device and a control method thereof. The electronic device comprises an input device, an application recorder and a control unit; the input device is used for receiving a first enabling signal at a first time and receiving a second enabling signal at a second time; the application recorder is used for recording a plurality of executed applications of the electronic device; the control unit is used for obtaining the first related information of the first application through the application recorder at the first time, connecting first memo data input by a user to the first related information, obtaining the second related information of the second application through the application recorder at the first time and connecting second memo data input by the user to the second related information, wherein the first application is last executed in the applications at the first time and the second application is last executed in the applications at the second time. According to the electronic device and the control method thereof, the operation states and or the operation situations of the different applications at the different time points can be recorded and accordingly the convenience is brought to the user.