|Remember the day where cellular phone does not yet exist? Well, that was the time where snail mails and telegraph were widely used. Can you imagine that? Aside from wired telephone, snail mails and telegraph were among the major ways of communication during that time. It will take 3-7 days to reach its destination. While the telegraph will only take 1-2 day only. These commonly use for emergency messages.
As the technology evolves, here comes the birth of the beeper. It is a small and personal wireless device for message. I haven't got them, how I wish they are still available today. LOL. After it depreciate, people got crazy with the birth of wireless telephone which is the cellular phone. It comes in different brands and model. Different Cellular Phone Company has released different cellular phone models almost every year. Today, a cellular phone is a must have. These are just few of wireless gadget that proves that we are living a wireless generation.
Furthermore, with the wireless generation, there are several wireless alarm system that are available. So as the intercom or intercom system and doorbells. From wired to wireless intercom system and wireless doorbell yet again, another advancement of technology.
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