Midterm I: Non-multiple choice question in the first set of practice questions (early  computational devices)

How this question would be marked on an actual exam.

• Result = 17818 (moderate amount of marks for this portion).

• Indicating that the grid is not genuine (very few marks for this portion but still worth something).

• Backup your genuine/modern duplicate conclusion (majority of marks for this portion): All the partial products of the digits in each number are wrong for all the columns save for those in the right-most column e.g. 5 x 2 = 10 or 1/0 (one of the 10s digit and zero of the 1s digit) yet the grid computes this value as 5 x 2 = 15 (1 in the 10s digit and a 5 in the ones digit).

Non-multiple choice question in the third set of practice questions (early mechanical devices)

• Arithmometer (by Thomas and others): the machine was based on the stepped drum design of Leibnitz, a cylinder for each digit.
• Baldwin-Odhner Machines: a variable toothed gear was used to store each digit.
• Since a gear is only a fraction of the width of a cylinder (a gear is a disk or a 'slice' out of a cylinder) the latter machines could be significantly more compact.

^{1 Example non-multiple choice questions. Here's a non-comprehensive list of examples: short answer, matching, 'tracing' the result of inputs on a device, drawing out and/or explaining a device.}