The Newmanry History

53 J Page 340


+10,000, up for + 20,000.


(d) on Colossi with short bedsteads


spanning, is unable to distinguish places 10,000 apart so that e.g. 500 -

1,000 cannot be disentangled from 10,500 - 11,000.


(e) End of Span cut-out


The ES c/o switch in the bottom row of the selection panel overrides the end

of span switches and spans to the end of the tape.


53J Q PANEL (Fig 58(xiii)).



(a) Q Selection switches


At the top right of the selection panel there are three large three-way

switches. Each switch has a neutral position and the active positions are Z,
delta Z; X , delta X; PSI , delta PSI . The streams to which these switches are
thrown are added together, and their sum appears in the Q panel: the five impulses
of this sum are called Q1,Q2,Q3,Q4,Q5.

Note: each large switch is really five switches linked together viz. one switch
for each impulse : if necessary these can be separated.


(b) The Layout of the Q panel


The upper part (10 rows) is used for imposing conditions on individual

impulses.


The lower part (5 rows) is used for imposing conditions on the sums of

impulses.

(c) Conditions on individual impulses


Every row in the upper part of the panel is arranged as follows. At the left

there are five 3-way switches, one for each impulse, each of which can be thrown
to dot or cross to make the corresponding impulse of Q dot or cross. At the
right there are five switches labelled 1,2,3,4,5, one for each counter, to
determine the counters in which the condition is to be imposed.





Any number of rows may be used: if conditions from two of them are switched

To impose alternative conditions


"either A or B"

"not (not A and not B)".

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