The following narrative describes Aegis Company’s Billing Procedures: Each evening the shipping department at Aegis Company forwards, to the billing department, copy #2 of all shipping notices for goods shipped to customers that day. The next day a billing clerk starts the billing process by obtaining unit sales prices from a price list book and noting the prices on the shipping notice. He then types a three-part invoice for each shipment, mails the original (copy 1) to the customer, and files copy 2 by customer name. From invoice copy 3, the clerk prepares a batch total tape, staples the tape to the batch of invoices, and sends the batch to the data processing department. A computer updates the accounts receivable master file. Notes: 1) Some data processing steps are intentionally omitted for simplicity of the problem. 2) Disregard exception routines.

Required:  

Prepare a logical data flow diagram. Prepare a systems flowchart.