Download solid-medicine cabinet and inventory system with time based alarm

USER INTERFACE, INVENTORY AND
SCHEDULER SYSTEM
COMPUTER
TX
RX
SEND DATA
DATA RECEIVE
SERIAL COMMUNICATION
RX
TX
MCU
LED (LIGHT EMITTING DIODE)
AND BUZZER
Figure 3.2 Block Diagram of Solid-Medicine Cabinet and Inventory System with
Time Based Alarm and Light Emitting Diode (LED) Notifier
Figure 3.2 shows the block diagram of the solution; it clearly shows that
a computer with the software application is interfaced to the MCU; in this case,
the designers used PIC16F877A. The computer and the MCU communicate with
each other using serial communication; the designers used the USB-to-RS232
converter cable for laptops and netbooks to provide serial connection since most
of the laptops/netbooks don’t have serial port.
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