The invention discloses the "Indian Abacus - Digital" - its construction and operation methodology. Indian Abacus - Digital is Indian Abacus with the extended facility to work online to learn I practise I test, on-line, the Abacus based skills, giving it the digital-connect. The Indian Abacus has largely greater advantage in regard to better Visualization that the student experiences in comparison to the conventional or the generic abacus which has been in use till now. The student while operating Indian Abacus moves the Lower and the upper sliders to un hide and hide the colour images which represent values as before. The lower sliders when moved towards the bar un hide and display green colour images and similarly the upper sliders when moved towards the bar un hide and display Red colour images.
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