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Vector electronic circuit for measuring humidity and temperature with using a sensor chip connected to the Arduino uno board. Measurement results are displayed on the screen alphanumeric display.
A person choice of strong password for security protection turning a place name into it's alphanumeric and symbol character. Selective focus, concept.
Vector electrical schematic diagram of the lcd display which runs under the control of a 8051 microcontroller. Design makes demonstrates how an 8051 can be used to drive a alphanumeric LCD display.
Electrical schematic diagram of the integer calculator based on the 8051 microcontroller. Displaying the pressed keyboard keys and the results of mathematical operations on the alphanumeric display.
Notebook with handwritten message on wooden desk. A person's choice of strong password with long alphanumeric character. Concept of securing online account, selective focus.

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