1. A component supply device which is related to mounting work of components on a board, the component supply device comprising:a component storage device that stores a plurality of components,
a component support section that supports the components in a dispersed state in which the components are dispersed from the component storage device,
a feeder vibration device that vibrates the component support section,
a first component holding tool that holds the components that are supported in the component support section,
an imaging device that images the components that are supported in the component support section in a state that the feeder vibration device does not vibrate the component support section, and
a control device, the component supply device supplying the components so as to mount the components on the board,
wherein the control device includes a component number acquisition section that acquires a necessary number of components that is a number of components that are necessary during mounting work in the mounting work machine, a component number calculating section that calculates a number of holdable components that is a number of components that are holdable from the component support section by the first component holding tool based on captured image data that is captured by the imaging device, and a first determination section that determines whether or not the necessary number of components that is acquired by the component number acquisition section exceeds the number of holdable components that are calculated by the component number calculating section.