<p>acceptable? All i can find is that the ti83 is, nothing about the ti84</p>
<p>The Ti 84 is basically the same as the Ti 83. It has all of the same features, plus a few more. It is allowed on the ACT.</p>
<p>TI84 Silver Edition is definitely acceptable. TI89 is the calculator that a good amount of people have that is not allowed on the ACT.</p>