opal-calculator

byDiya Trivedi

start a project to build single simple calculator

Landing
Landing

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Architecture

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Landing design preview
Landing: Read headline and explainer
Landing: Enter calculator
Calculator: 1. Enter first operand
Calculator: 2. Choose operation
Calculator: 3. Enter second operand
Calculator: 4. Press equals
Calculator: 5. Read displayed result
Calculator: 6. Press clear key
Calculator: 7. Press new calculation control
Calculator: 8. Read invalid-input message
Calculator: Return to landing
Landing design preview
Landing: Read headline and explainer
Landing: Enter calculator
Calculator: 1. Enter first operand
Calculator: 2. Choose operation
Calculator: 3. Enter second operand
Calculator: 4. Press equals
Calculator: 5. Read displayed result
Calculator: 6. Press clear key
Calculator: 7. Press new calculation control
Calculator: 8. Read invalid-input message
Calculator: Return to landing