TI's, don't waste your time and money
591559
Here is the problem. The author of this book says he is "Dr. Robert Duncan", CIA operative who is the author of "Project: Soul Catcher: Secrets of Cyber and Cybernetic Warfare Revealed". If you look at the author profile for the real Robert Duncan, this book is not listed. The author of "How to Tame a Demon" even lists the same publishing entity, "Higher Order Publishing" in Boise Idaho as the publisher in his/her attempt to hijack Duncan's credentials in what I can only assume is an attempt to sell more books.

This book reads like the whole thing was written in any language but English and run through Google Translate. This alone cast suspicion for me as I read it. An accomplished US scientist wrote this book? No way. So I looked inside Project Soul Catcher in order to check out the writing style. It took me less than a minute to confirm my suspicions. The tacky graphics of this book's cover also are not in alignment with the more elegant cover of Project Soul Catcher.

So the question is this. Who did write this book? A n undercover TI? Understandable to want to keep your identity hidden. Most of us TI's use pen names. But we don't plagiarize the identities of other actual living persons. More research unveiled the real Robert Duncan who can be found on YouTube and online in interviews. He ought to sue whoever wrote this for identity plagiarism.

Given all of the above, the information in this book cannot be trusted. It could be a TI just wanting to help. It could be more propaganda put forth by the gangstalking community in order to manipulate TI's. Because of these uncertainties, this book is a waste of time and money.
86515
Do not waste your time or money. Nothing friendly about installation, use and support. Support for even basic help and install costs $$. Don't know how they stay in business.
3599925
Installed (7) of these in a customer's home yesterday.  Mind you, this was some 65 miles one way.  This morning, I received a call from the client that all of them went off, falsely.  If there is one thing I despise, it is a call back for faulty equipment.  Today, these will all be changed and returned for a different brand.

Don't waste your time with these.  I certainly wish I hadn't.
1746145
I posted the following review on other TI84C items, but everyone should see it before purchasing this product:

I've had this calculator for 2 months and there are a lot of problems. Do not buy this calculator if you value speed, simplicity, and reliability. It will work for slow, high-school calculations but cannot handle college-level, calculation-intensive functions.

I've been using TI graphing calculators all my life, but recently purchased the color TI84 since I lost my old black and white TI84. This new calculator is pretty horrible and doesn't fit my needs at all because although they increased the resolution and have colors, the company did not change the processor (and therefore processor speed remains the same). Therefore simple calculations like 1+1 take significantly longer to appear on the screen because the processor is slower to refresh the higher resolution display.

In addition, programs (even the simplest ones) take about 3 seconds to load, let alone run (compared to ~.5 on a B&W TI83 or 84).

Parenthesis and equation conventions have changed. TI thought it would make lives simpler by "intuitively" doing parenthesis for you, but in doing so, just made the overall accountability of parenthesis-heavy calculations more confusing and unnecessarily annoying. For example, doing e^(xyz)*(123) on a regular B&W TI would automatically put the "123" as a multiplier of the exponent, which is conventional in the order of operations, but on the TI84C, you must manually specify which term is the exponent and which is the coefficient, which does nothing but make the calculation more confusing. On multiple occasions, I've entered an equation and have it output completely wrong answers even when the equation on the display is accurate. The problem arises from the calculator automatically judging order of operations for the user.

Lastly, and possibly most frustratingly, typing in equations too quickly will cause the calculator to not register certain keystrokes, which is never never an issue on a B&W TI83/84. I believe it is because the processor takes so long to refresh the screen after keystrokes that pressing a button during this refresh phase will cause the device to ignore that input.

As an engineering student, speed and reliability are incredibly important when performing calculations. When this calculator trades speed, reliability, and accuracy for some bad color and resolution upgrades, the calculator becomes a last resort.
3534667
UTTERLY USELESS GPS. The first one would not find any sats at all. The replacement tells me I am a block away from my house when I am sitting on the front porch. I traded emails with Tech Support and they had me try all of the usual tasks to no avail and then just stopped responding at all. I finally got the update provided by tech support to load, but then it was even more off on its location. Not to mention it takes forever to find sats when it bothers to find them at all. It has never found more than 3 or 4 of them even though more than 10 are available.

STAY Away from this unit at all costs. I am going back to Garmin or TomTom for my GPS needs.
1336839
Bought this for my 16mo little boy who loves his older sisters Cozy Coupe. We spent 2+ hours trying to put it together only to realize it was defective. My hubs has a contractor background and it just should not take as much work as it did to put a toy together. I've had better luck with Ikea items! The really sad part is you can tell Little Tikes has begun (like so many companies) to cut corners and save money on the actual product. The plastic is $.99 store level and the "holes" are not precut. The roof supports did not pop into place, the door didn't line up correctly and therefore didn't stay locked, and the trunk wouldn't close unless pushed hard. Pathetic for a child's toy that most people spend at least $70 on. When you read the other reviews you can see the struggle is real putting this together, and it shouldn't be. I suspect the reviews from past years discussing the toy aren't dealing with the same cheap plastic product Little Tikes sent me (and others) in 2015. Anyways, we didn't get it assembled by Christmas so my son went without. I'm dropping it off at UPS today to ship back to Amazon. I won't be getting a replacement.
184740
Keys were invalid, money was refunded. Don't waste your time
370819
Don't waste your TIME!!!!
JAM...JAM...JAMMM..
I only use once in awhile. One cartridge till new.
3706303
not a very good product, ti does not have too many featiures but I guess for the money is ok
1595360
Don't Waste your Money, Like all the other reviewers its a load of misleading BS.. The unit resets out of the blue for no reason, The Nav is horrible and the maps are 3 to 4 years old with no update in site from their site Ndrive.  Boss does not answer their tech support calls was on hold forever until I just said return my call.  The screen a touch screen is very hard to work with, The USB/SD/CD load times take too long,  Its of course using windows CE as its operating system (CE died 10 years ago).  Its preset audio has only 7 setting one worst then the other.,  My stock stereo is 100 times better then this thing and it was created in 2000..  Stay away from BOSS very disappointed with their system.. NEVER again.

What really pisses me off, I have a Tom Tom 740 Live, but wanted a NAV system and blue tooth on one system.,  I thought well, the MAP given to Ndrive where from TOM TOM and when I used my PC to update it., Its now called Ndrive Plus and their maps are years, I mean years old with no plan on updating them., So, this was a waste of my money both for the unit and the professional install required to extend the warranty if you can ever get them on the phone to send the unit back..
922165
It didn't work at all, total waste of money and time
24468
First package had only three of the fourt pieces. Okay, it happens. Second package had all parts but U-bolts 1) not long enough to get through my truck racks and (worse) 2) the U-bolts were not the same width as base they were supposed to slide through and (not done) flared out at the ends so once I got them shaped to fit the holes (vice and oil filter wrench) they would not pass all the way through because they were not straight. Gave up. Waste of time and money.
1630626
Thin doesn't even begin to describe this. This book is basically several TI data sheets printed out with a minimal amount of additional (mostly useless) babbling, which I can't help but think was intended to be a face-saving measure (it didn't work out). Writing a review of a book sort of implies said book to contain something, anything of substance to write about. This review ends here.

Anyone interested in TI's MSP430 line should run away from this one and head over to John Davies' most excellent&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/MSP430-Microcontroller-Basics/dp/0750682760/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">MSP430 Microcontroller Basics</a>.
981205
If I could give negative stars, I would! Can't use it.  Constantly getting an error message.  Waste of time and money!  Customer Service is nice.  I would love to give a better review, but nothing is working!  I AM RATING THE PRODUCT AND NOT THE SERVICE.  Iv'e changed the cartridges, used an eraser as advised, and NOTHING.  A complete waste!
2897420
Product doesn't work, don't waste your time and $. When you inbox it you are supposed to download the companion audio for each companion book. The download does not work and thus the product is useless. Now I have a disappointed kid and I have to go through the trouble of returning the product.
1095217
what a scam, not 60 miles as advertised but 20 to 35 max as per instructions, it does not work in mobil homes or any building with aluminum or metal, a total waste of money.
856940
I doesn't work! Don't waste your time and money