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_� _ <br />, _ ,.. ,. r ,-� <br />� _ ,�N,, ,ti <br />. �� <br />y . <br />aX <br />« <br />i <br />S�,£ <br />��� <br />�<V Y <br />4 �,; � <br />s t <br />��i a� � . ' . . . <br />� <br />�� �jfirv y . . . . . . � . <br />kf yc <br />i�i� r <br />� ��s, � � <br />�tl� � <br />t �: <br />{P{y.'��vT j.. � r . . . . <br />� �l Y��3r1`�' T . . • <br />eY �yy` � � . . <br />��?����Y�� y � � <br />�y � 33-Fu 1 , . � - � . ' <br />V <br />1�'����'M1��yi71LS� t 1 . . � <br />. 4W�k+XF ? y1: .. . ' . . <br />x <br />y rt� � R � � . � . <br />..y��,i�t kr � - � �. . . . . <br />.ypY ,i 1 � .. � ' . . . �' � i <br />ay��y�Rw�., � <br />�� k�� fi , 4 <br />4��� t ex1Y ... . . _ . . <br />1.''''SSi�,��a�9 . . � .. <br />����'jx „ � . . . . . <br />S�+'1� "5G14 � Y} - . . � . . . . , 4 : <br />�.�15'jk YT � � .-C . . � . � . � ' � .. . . . : <br />���* 44i/ t .. . .:. .. ..._ .. ; <br />5��;����„x;t ; t� . . . ... . . . . . � t .� . <br />' � �,�t�, } information read in by an input iristruction after a h ` <br />� �����r���p�t'�ulput status request. ,,' <br />"�� �t , ; < + ; <br />� a � �:�ti�,�� s� f �• , : � � � - � � , <br />,�'`���,ff �qu�p�ent is � conn�cted to the 160 . The 160 carries out one of its assigned opera ' 4t; <br />�,° t�j hr �, � tions at a time, e.g., com ute, in ut or out ut ; '' <br />��xi� . te�'° vxa the ' mput-output cable, which con- 1? p� P r' <br />,������'��� �' `` ' ` '� Thus both the in ut and out ut lines ma ' ternu- ' <br />i'� 0�,�� 1�� m p u t l i n e s, 1 2 o u t p u t � i n e s; a n d s e v e r a l P_. �' y. <br />��`� '� ' nate in the main switching ;register Z: ' <br />,� <br />B � i� c%� X u�% e�; u i� l u d u i g e x t e r n a l f u n c t i o n r e a d y, , _ ,,? <br />t�,��� u e s t, � n d o u t p u i r e a d y The five instructions related'to in put out put � �� �`^ <br />���� ��� �y:� c� operations are: ?2 73 74 75 and 76. The 75 ,; � .�' � <br />�•��t YI � .� .. �.. . . <br />£ e��2,'[�t�pu� I�nes are dual purpose They carry ' ' ' ' ` ' ` `' <br />�Z.��4�,, , - instruction s'rgnals . the approp�iate . penptieral `� ' ` ; � ' <br />����2�,li�ts „o� output inforinatton ,from the 160 - ` ' � � <br />,,,,�a �w � device to connect to the input or output lines ` <br />, j <br />���ternal d�vice They' also ,carry external The 72, 73, 74, and 76 instructions transier : `Fa't <br />. �F�j�v � � C !� .�.: 4 �. .. . . . ,' t ... <br />a�i.1 �n�o�'tation to; the contzol unrt of �the � , ,-�3; <br />the data. <br />�; �al� e+�uipment �The type of information ' ; : '; <br />,����, � � � - - �Once an input or output selecnan has been � � , t ; <br />� put ut XXnes as determined by an : accom- � �. ; <br />��,,��-�� ; p� ,�r r - � - - made -by' the External Func�on �instruct�on iri the ,, ; «�. <br />e�ing��sYgnal, �t�� also appeazs , on the output , <br />�.�,,�, ��� ��: ; � � j,, .� ' case of .paper `tape ; and other non-block transfer � ' ' �1 �` i <br />; ,�,��r, Qn ;�he ;external f unction � ready line � ' , � , ,�:: <br />�,�,;�r n a �,� - devtces; 'any , number: of successiye mputs or ;out ' r;; <br />`�`�%12 =m t lines are' also dual u se ..Nor uts ma lie made without`: anottier external func � t � ` <br />�� pu�,S � P�. P.. Y „ , F,�; <br />�` Pi"-�i��� �'r''��h, s a -- } i - _ .^ .. . . . . :- : : <br />�th�yi c�rry up ta �.2 bits of input uiformatiu� tion Any time a change is made fromt input ta ;; ' ; i, ' j <br />,,, <br />��K py� G'���.. £ -�+ . �, '.� ...� ;, �.:., . . -' :: , ' �. . : - .. <br />�s � ��fer�nal°�evice;ta the' 160��":A,fter a status � output :or vice versa, �or; whenever .a �change o� ', � ' �"�� <br />x, �,���� xFL�hr'� . tf h� '' :.. � :,. :: `. ' :.- . `., .. . � . ' ':' :' .., � s '-Ft°n.�t� <br />e,�� �X�r�al funet�an, the input hnes carry: equipment is. - made, �ri , External Funchon ux -: x, <br />��. �+t4x�'-;}����. < < � - . , <br />�t d�.j]i��t�f,.�st� t�s tnft�rmatxon,<wh�cli is read mto struct�on inust;�recede the'input:or out put o p era =� 7 <br />y , , �; �, , <br />: � � J��� �� �y'4i f}.��vl� �r �� .+�.c: :. ".: .. %.".:' �. � ` � . �,::': : � ��J a <br />s � . <br />.r . ,�:j� , . � �-� ' �' <br />����60 ��y a� �nput inskruction Status infqrma tton af , a block-transfer device; s�uch as magnettc : <br />� ,: <br />�<ki`'}4% liy k, S :;, ': ,. .. ... ., - .: '�;� , . '. � �k � <br />v�.,. o.t'ya � fI`� A 2 i t A a �� �� � � � i n� <br />q,��nxs;��x�e�ttf'iec� ; by tlie �act > that ` it is the first tape ar , punched . carci equipmenti ,�, n <br />: , �' 's����''�`� r, .�}a �. y ` " ': ` � �:`P :�� <br />�� <br />7�� � �� �t4 3`r `h � � �, , 1 <br />` � <br />Lt'�}"� �'S �r � i t� r� �� ,�,��,i� �� <br />r.� ,<,r,e.�t.v �",ri,.s;,-.,7..,, _ . -r ,ti: <br />ar#ix.�`'"`�y�."^"r.;.'s4'.yy �f+ , -. � <br />2 t7y <br />° {}� �t�i7�'� rtt�C n +'� r � f . 1 h�t� { . <br />,,��1.�,�3�� ,�„�''rrF " �. <br />� � ��� ;n <br />x,t��� {�.y^���/�3�J u fF ��' r ,s r 5 r�� ti <br />i + d <br />�,��]y'S{� }(Sj:4i i }i� 1 . 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