iPad 2 games

[Howard Brazee]

What makes a game such as iDuhKnow a game that can run on the iPad 2,
but not on my iPad 1?

[David Empson]

Michelle Steiner <mich...@michelle.org> wrote:

> In article <vgjh67d0j9s3jop7d...@4ax.com>,

> Howard Brazee <how...@brazee.net> wrote:
>
> > What makes a game such as iDuhKnow a game that can run on the iPad 2,
> > but not on my iPad 1?
>

> The original iPad does not have a gyroscope.

In this case, the gyroscope appears to the be required feature, since
the app says it uses the gyroscope, and it requires an iPhone 4, iPod
Touch (4th gen) or iPad 2. Earlier models in each family don't have a
gyroscope.

For other apps, the reason for an app not working on an iPad 1 when it
does on an iPad 2 might be:

- Missing hardware features. The iPad 2 added front and back cameras and
a gyroscope.

- Minimum RAM requirement. The iPad 2 has twice as much RAM as an iPad
1.

- Minimum performance requirements. The iPad 2 has a faster CPU and
better graphics hardware than the iPad 1.

If your iPad hasn't been updated to the latest iOS, you could also bump
into a minimum iOS version requirement.

--
David Empson
dem...@actrix.gen.nz

[Wes Groleau]

On 09-08-2011 18:35, David Empson wrote:
> In this case, the gyroscope appears to the be required feature, since
> the app says it uses the gyroscope, and it requires an iPhone 4, iPod
> Touch (4th gen) or iPad 2. Earlier models in each family don't have a
> gyroscope.

What makes this "gyroscope" significantly different from the
accelerometer the others have? (Gyroscope to me refers to devices
that take advantage of properties of angular momentum in rotating masses.)

> - Minimum RAM requirement. The iPad 2 has twice as much RAM as an iPad
> 1.

I thought the cheapest version of both was 16GB.

--
Wes Groleau

There are two types of people in the world …
http://Ideas.Lang-Learn.us/barrett?itemid=1157

[nospam]

In article <j4c37b$o5f$1...@dont-email.me>, Wes Groleau
<Grolea...@FreeShell.org> wrote:

> > In this case, the gyroscope appears to the be required feature, since
> > the app says it uses the gyroscope, and it requires an iPhone 4, iPod
> > Touch (4th gen) or iPad 2. Earlier models in each family don't have a
> > gyroscope.
>
> What makes this "gyroscope" significantly different from the
> accelerometer the others have? (Gyroscope to me refers to devices
> that take advantage of properties of angular momentum in rotating masses.)

more precise

> > - Minimum RAM requirement. The iPad 2 has twice as much RAM as an iPad
> > 1.
>
> I thought the cheapest version of both was 16GB.

that's flash memory.

the ipad 2 has 512 meg of ram for running apps, as does the iphone 4,
while the original ipad has only 256 meg, as does the iphone 3gs. the
original iphone and iphone 3g had 128 meg of memory.

[David Empson]

Wes Groleau <Grolea...@FreeShell.org> wrote:

> On 09-08-2011 18:35, David Empson wrote:
> > In this case, the gyroscope appears to the be required feature, since
> > the app says it uses the gyroscope, and it requires an iPhone 4, iPod
> > Touch (4th gen) or iPad 2. Earlier models in each family don't have a
> > gyroscope.
>
> What makes this "gyroscope" significantly different from the
> accelerometer the others have? (Gyroscope to me refers to devices
> that take advantage of properties of angular momentum in rotating masses.)

That's exactly right. The gyroscope allows detection of rotational
movement, while the accelerometer only allows detection of linear
movement. Using both results in a much finer degree of control in games.

> > - Minimum RAM requirement. The iPad 2 has twice as much RAM as an iPad
> > 1.
>
> I thought the cheapest version of both was 16GB.

As others have said, that's flash (storage), not RAM (active memory).

--
David Empson
dem...@actrix.gen.nz

[Wes Groleau]

On 09-10-2011 07:04, Lewis wrote:
> That's a bit like asking what makes this octopus different from a
> llama. A gyroscope is nothing like an accelerometer.

Someone said the "gyroscope" measures rotation while the accelerometer
measure linear motion. But in fact, the older products were pretty good
at measuring the amount the device deviated from any particular
plane.

[Wes Groleau]

On 09-10-2011 13:31, Michelle Steiner wrote:
> In article<j4c37b$o5f$1...@dont-email.me>,
> Wes Groleau<Grolea...@FreeShell.org> wrote:
>

>> What makes this "gyroscope" significantly different from the
>> accelerometer the others have? (Gyroscope to me refers to devices
>> that take advantage of properties of angular momentum in rotating masses.)
>

> Right; it has both an accelerometer and a gyroscope.

Since it has no rotating masses, it can't very well take advantage
of those properties. Yes, I know, some people have redefined
"gyroscope" in defiance of its etymology.

[Wes Groleau]

On 09-10-2011 21:05, Michelle Steiner wrote:

> Wes Groleau<Grolea...@FreeShell.org> wrote:
>> Someone said the "gyroscope" measures rotation while the accelerometer
>> measure linear motion. But in fact, the older products were pretty good
>> at measuring the amount the device deviated from any particular plane.
>

> How about rotating within a plane?

If it's rotating within a plane, it is rotating through all other planes
that are not parallel to the plane it is rotating in.

Now, it may be that the iPad is unable to detect rotation in a
horizontal plane. Sometimes it seems to do so, but that could
be explained by the magnetometer.