74LS193 digital display clock

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sisun1030

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Develop a digital display clock circuit based on the 555 timer using the counter chip 74LS193. The circuit must generate it's own 1 second timereference (accurate to within 10%). The circuit has a single digit output (a signly 7 segment display) that counts from 0 to 9 seconds. The circuit overflows from 9 back to 0 and continually repeast the count.

could anyone please provide a schematic diagram
and explain how to make this circuit work please
 
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