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  • Spelling mode. There were four levels of difficulty which could be chosen. The first level was the easiest and the fourth level the most difficult. The activity would begin by pressing the "Go" key. The Speak N Spell would ask the user to spell a word by one of several phrases such as "Spell cat". The student would have two chances to spell the word "cat" correctly by entering each letter and then pressing the enter key. If wrong the Speak N Spell would say "wrong, try again, cat" the first time. If not spelled correctly after the second try, the Speak N Spell would say "That is incorrect, the correct spelling of 'cat' is 'c', 'a', 't', 'cat' now spell . . .". If spelled correctly, the Speak N Spell would say something like "that is correct, next spell dog". This would continue until a word list of ten words had been introduced to the user. After the ten words were attempted, the Speak N Spell would declare how many the user spelled correctly. There were two keys that the user could use to help in the process. The "Repeat" key would say the word again and the "Replay" key would start over with the first word in the list.
  • Say it mode. This mode was added to overcome our fear that the words would not be spoken well enough for the user to understand what word was to be spelled. In this mode each of the ten words the user would later be asked to spell were pronounced one at a time while the correct spelling was displayed. Once the ten words were pronounced with their respective spelling, the spelling mode would begin with the same ten words.
  • Secret code mode. This was a simple encryption algorithm of which the user could type in words and have them encrypted by pressing the secret code key. The encrypted word could be decrypted by entering it in again and pressing the secret code key.
  • Random letter mode. The purpose of this mode was to allow the user to be a bit creative. When the "random letter" key was pressed, a letter would be displayed. The creativity came with what the user would do with the letter. Perhaps the game would be to identify things in the room starting with that letter, or naming friends and family whose name starts with that letter. It was totally up to the user to determine how to use the letter in their made up game.
  • Hangman mode. Everyone knows how to play the hangman game. The Speak N Spell would randomly choose a word from its vocabulary. The user then would enter letters to attempt to identify the word. This had to be done before the fifth incorrect guess.

Pushing the state of the art

Depending on how you look at the success of the product there were either two or three break through ideas in the state of the art. Here is a quick list of them.

  • Single chip speech synthesis device. Linear Predictive Coding (LPC) with ten coefficients at an 8kHz sample rate and 1,000 bits per second average data rate.
  • 128K memory. The state of the art at that time was 4K bits even though it was at a very slow data rate.
  • Talking toys and games. Up to this point calculators were not allowed in the classroom. The concept of a learning aid was brand new to the educational world.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, The speak n spell. OpenStax CNX. Jan 31, 2014 Download for free at http://cnx.org/content/col11501/1.5
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