Editing Comptometer (section)

===Post World War II models===
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The models become lighter with the use of aluminum and more refined inner mechanical designs. Both mechanical and electric models are offered. Their outside is similar to the model M machines. The model 3D11 succeeds to the model M and the electric model 992 succeeds to the model K.
The major external appearance change of the 3D11 and 992, the keys were two tones of green with a fuller depth almost twice the old original style. making identification very easy. Also the lock
release key (red) was moved from the upper right corner of the keyboard to the center and just below the 'one' keys so it could be thumb operated. On model K electrics the motor was turned on with a switch and ran continuously during use. The 992 had a micro switch which started the motor at the start of any key depression and shut off after key action competed. This reduced the motor
wear to almost nil.

The most important new designs of this period came from the Sumlock comptometer Ltd company that introduced the first all-electronic desktop calculators almost two years before the competition. They were the [[Sumlock ANITA calculator|ANITA Mark VII]], first introduced in 1961 and marketed in [[Continental Europe]] and the ANITA Mark VIII, a slightly improved design, introduced at the same time, marketed in Britain and the rest of the world. They both started shipping in 1962.

The last ANITA machine with a Comptometer keyboard was the ''ANITA mk 10'' introduced in 1965, still using cold-cathode switching tubes and that will be replaced in 1968 by the ''ANITA mk 11'', a 10 key machine.

[[Sharp Corporation|Sharp]]'s first all transistor desktop calculator, the ''CS-10A COMPET'', introduced in the summer of 1964, also had a Comptometer type keyboard.