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Tesla Challenge 18: Auditory Wrist Watch

Subject: Blind watch
From: Joe (周海涛) <joe@longteng-co-ltd.gd.cn>

Hey everyone! I was inspired by a TV show I watched yesterday about how blind people read with Braille, and I thought, why not create a device intended for blind people? We'd get more customers, after all, 2% of China's population is blind! I thought of a watch that pronounces the current time. We'll use RavenDynamics natural language processors for this.

Subject: Re: Blind watch
From: David 戴维 P. Solomon <daiwei@longteng-co-ltd.gd.cn>

I took the time to figure out the data packets that represent the words 'one' to 'twelve', as well as AM and PM. Now you're all set!

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Small hint: Use two ROMs.

Big hint: Divide the time given by the RTC by four, then calculate it modulo 6. A good occasion to recall modulo operation algorithms!

Optimization tip: Store the numbers for AM and PM inside microcontroller code rather than in a ROM.