Loadcell will produce a small electric current when weight is applied. The electric current is sent to Digital Weight Indicator via a normal cable. The Digital Weight Indicator will amplify the electric current and translate it to digital weight. Example: 15.7 kg When attached to a printer via a printer cable, it can print the weight on paper. Usually Weight Indicator comes with a basic printing feature. It can be programmed in the firmware to print in few basic formats. Usually there is a print button on the Digital Weight Indicator for user to press to print. With Printer A computer can be connected to it via a serial cable to RS-232 port on the computer. Information like weight, unit weight, status (stable, unstable, error) is sent to the computer in a particular format. The format is not standard and differs with each brand. A computer interprets the information received and displays them on screen and print it on printer. With user interaction, user can enter other information in relation to the weight received and save them to a database. By storing information in a database, many other processes can be automated by software application like invoicing, quality control, batch control, warehousing, distribution, and more.