Device for the use of and easily carried by an individual

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United States Patent [191

[11] Patent Number: 4,460,965

Trehn et al. [45] Date of Patent: Jul. 17, 1984 [54] DEVICE FOR THE USE OF AND EASILY 4,233,660 11/ 1930 CARRIED BY AN INDIVIDUAL :,§7(7),§g(7) [76] Inventors: Karl B. Trehn, Lillgfirden, Cverby, 4:321:671 3/1932 150 12 Stjéirnhov; Nils H. Swahn, 4,341,951 7/1982 Benton .......................... .. 364/406 X G " , 1 65 D‘ h 1 , _ _ _ bor31n:¥aSg::d8en 82 ‘lurs O m Primary Exammer—Edward J . Wise Attorney, Agent, or Firm—Burns, Doane, Swecker & [21] Appl. No.: 232,223 Mathis [22] Filed: Feb. 6, 1981 [57] ABSTRACI [30] F°l'°18T1 AP1I1i¢11¢i0Il Priflrity Data A device for the use of and easily portable by an indiMar. 2, 1979 [SE] Sweden ............................ .. 7901889 \'il<(111a11)~ cogsifstifli of a H1111? Iltferlrllory, a microprocessor. ‘ _ a ey oar or t e contro 0 t e microprocessor, etc., %i3 """""""""""" " G061-1‘ and at least one accounting memory and a display. Op' ' ‘ """"""""""""""""" " ' ’ eration of the keyboard in a pre-determined fashion will 364/401; 364/406; 377/26; 368/90; 235/379 cause the micro rocessor to transfer one or more units [ss] Field of Search ............. .. 364/408, 403, 404, 405, P

364/406, 709, 464-467, 401; 235/92 TC, 92
AC, 379; 133/4 R; 368/90; 377/20, 26

[56] References Cited
U.S. PATENT DOCUMENTS
3,815,718 6/1974 Singer ...................... .. 235/92 TC X
3,867,615 2/1975 Sioufi . . . . . . . . . . . . . . . .. 235/92 TC
3,959,632 5/ 1976 Trehn et al. 235/92 TC X
4,065,663 12/ 1977 Edwards ................... .. 364/464
4,075,696 2/1978 Shinoda et al. . 364/709 X
4,133,034 1/ 1979 Etter .............. .. 364/464
4,134,537 6/1979 Glaser et al. 235/379
4,151,596 4/1979 Howells . . . . . . . . . . . . . . . . .. 364/709
4,164,038 8/1979 Nachtigal 235/92 AC X
4,188,962 2/1980 Onoe et al. .. ...... .. 133/4 R
4,192,006 3/1980 Hausdorff ..................... .. 364/464 X

of information from the main memory to at least one accounting memory. The point in time at which this transfer is made directly or indirectly (for example via internal delay circuits) may be determined by the individual. The number of information units to be transferred is determined by operating the keyboard in a certain, preferably combinatory fashion. Each information unit or group of units which is transferred from the main memory to the accounting memory by operating the keyboard in some other, certain, preferably combinatory fashion will either be given a certain address code or will be allocated to a specific accounting memory.

7 Claims, 6 Drawing Figures

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T 1 . 46 47 45a OPTICAL KEYBOARD Ho D|$P[_AY l WT Y FAll_URE DETECT49 ‘_____ BATTERY 48

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