Sketch of the Analytical Engine invented by Charles Babbage, Esq.

by Luigi Federico Menabrea

the (

)th.

always decides which of two courses the succeeding processes are to follow, by feeling for the value of

through means of a subtraction; and so on; but we shall not enumerate further. It is desirable in all calculations, so to arrange the processes, that the offices performed by the Variables may be as uniform and fixed as possible.

Diagram for the computation by the Engine of the Numbers of Bernoulli.
See [Note G.] ([page 67] et seq.)

Number of operation.			Nature of operation.	Variables acted upon.	Variables receiving results.	Indication of change in the value of any Variable.	Statement of Results.	Data.			Working variables.
								0	0	0	0	0	0	0	0	0	0	0	0	0
								0	0	0	0	0	0	0	0	0	0	0	0	0
								1	2	4	0	0	0	0	0	0	0	0	0	0
1
2								1
3								1
4											0	0
5									2
6																		0
7								1
8
9
10
11																			0
12
13
14
15
16															0
17
18
19
20																0
21																		0
22																			0
23
Here follows a repetition of Operations thirteen to twenty-three
24
25							by a Variable-card.						0	0