A few days ago I had the opportunity of testing the product which Apple says that it's a revolutionary one, the iPad (they said the same when they launched any other product).
Firstly, I'll tell you its specifications. It has an Apple A4 1 GHz processor, based on ARM technology. The storage memory varies between 16, 32 and 64 GB, and, related to RAM memory, this is a complete mystery (yet). It is known that physically it seems to be having 512 MB of RAM, but in practice, it reveals only 256 MB of RAM (showed by different tests). It is certain only that the RAM is integrated into the chip of the processor.
It also has a 10 inch capacitive multi-touch screen, perfect for almost anything. On the connectivity side, we have the Wi-Fi model, which starts at $499 with 16 GB of storage, and the Wi-Fi + 3G model which is going to be available soon, this month. The battery offers 1 month for stand-by, and about 10 hours when surfing web on Wi-Fi and stuff like that.
On the Apple Store I've waited for a few minutes after I got one to play with (everybody was running to get one to test when somebody finished testing one). I think that there were about 15-20 iPads available (it is a quite big store, in Dadeland Mall, Miami).
The first sensation was that it was fast. But not as fast as I was expecting, but it was pretty good. The applications are launching like on the iPhone (slowly, showing who made them or things like that), and some of them really looked very well. But several were made especially for the iPhone, and looked very bad because they were running at a low resolution (I'm sure that this will be a problem for a long time).
I found it difficult to play with it using its accelerometer, considering that I used an iPhone for about 1 year and a half, and now I have the Nexus One. It is an updated version of iPhone OS, so the menus are updated in many basic applications (they look really good).
Many fans of Apple said that the iPad is very fast, faster than even the Nexus One. I don't agree with this. They probably said this even without ever touching a Nexus. It is clearly faster than the iPad.
There have been reported several problems with the iPad after only a few hours after it was launched, many users complaining that on their Windows machines and especially when connected to USB hubs the iPad refuses to charge. Apple says that when it gets into sleep, it starts charging automatically, but they can't actually prove that this happens at all times, because there is no icon indicating if it charges or not. And there are also problems with weak Wi-Fi signal and connection problems on LAN configurations.
And if you want one, if need to know that it has no camera and no GPS. You can buy additional accessories, and even if the iPad starts a $499, you can easily pass $1000, considering that Apple has only quite expensive accessories.
Apple has reached again, a great success with the iPad. In the first day of selling, the sells with the pre-orders passed 300 000 units. This is completely astonishing. To compare, Google sold only 135 000 Nexus One units after 74 days, while there were about 1 million iPhones (first generation) sold after the same period of days. I don't know how Apple does this, but it is known that Steve Jobs has currently the most profitable company in the domain of mobile devices.
Below is a video taken with my Nexus One, while I was testing some of iPad's functionalities: