Case Study#$1$: An electronics manufacturer, Techtronics Ltd$.,$ produces high$-$demand products like smartphones, tablets, and wearables. To maximize production efficiency and cost savings, the company relies on a Push Inventory Control System, forecasting demand based on previous sales data and seasonal trends. However, in $2021,$ due to an unforeseen increase in demand for tablets as remote work surged, Techtronics Ltd$.$ faced critical issues. Production had already reached maximum capacity based on forecasts, and the inventory of tablets was quickly exhausted. This shortage led to lost sales opportunities, increased customer dissatisfaction, and market share loss to competitors with more agile supply chains.

Answer the following questions:

$1.$ What are the key differences between Push and Pull inventory systems that impacted Techtronics Ltd$?$