Because they are generally used  in conjunction with a computer-operated system for production and testing, Programmable DC Power Supplies are often referred to as “system” power supplies. 

In addition, these Programmable Power Supplies China have command languages for sending instructions to the instrument through the digital interface. The ability to control a programmable power supply via your computer, instead of pushing keys on the instrument’s front panel, makes this type of power supply especially useful when working on complex setups.