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MICHEZO
TEKNOLOJIA
VAZI
Miniature Printing Electronic Calculator: Kilby, Merryman & Van Tassel, 1974
Jack S. Kilby, Jerry D. Merryman and James H. Van Tassel of Texas Instruments first filed for this portable calculator in 1967; the patent, US 3,819,921, was granted in 1974. It adds, subtracts, multiplies and divides. All the arithmetic and control is done by one integrated semiconductor circuit array lying flat under the keyboard encoder. Answers are printed by a thermal print head, a 3 × 5 array of heater elements on a semiconductor wafer, on heat-sensitive paper tape read through a magnifying window. The case measured 4¼ × 6⅛ × 1¾ inches and the calculator weighed 45 ounces, running on batteries.
Juu
Factory process
Maagizo
1
1
Keys and encoder
Keys and encoder
Mount the 18 keys (0–9, +, −, ×, ÷, the decimal point, C for clear, E for error and P for print) in stepped holes in the upper case. Each key shaft slides in a bearing; a helix spring under the shaft head returns it, guide pins stop it turning, and a resilient pad at its base carries a thin gold-plated copper strip. Below lies the encoder: conductive strips on an insulating board, grouped so each key shorts its own set of output terminals and encodes its digit in excess-3 binary code.
Vifaa kwa hatua hii:
Kasha la kikokotoo la sehemu mbili lenye bawaba1 kipande
Kitufe kinachorudishwa na springi chenye pedi ya mguso18 vipande
Ubao wa kisimbaji wa kibodi1 kipandeZana zinazohitajika:
Seti ya koleo ndogo za usahihi
Seti ya bisibisi2
2
Primary electronics
Primary electronics
Mount the integrated circuit array below the encoder, in a plane parallel to it, and connect the encoder's terminals to it. The array holds the arithmetic and control sections, generating the timing signals for calculating, printing and advancing the tape.
Vifaa kwa hatua hii:
Mpangilio wa saketi jumuishi wa kikokotoo1 kipandeZana zinazohitajika:
Seti ya koleo ndogo za usahihi3
3
Printer and tape
Printer and tape
Place the thermal print head above a resilient pressure pad, its wafer surface against the tape. Rest the tape reel on a shelf; the tape runs up through a guide block, over the pad under the print head, past the magnifying lens window and out through the side of the case. A solenoid tape-advance mechanism steps the tape on after each line: its coil pulls a pivoted clapper, a spring-biased clutch grips the tape against a clutch plate, and a drive spring pushes it forward when the coil releases. An insulating acrylic cover plate separates the shelf from the primary electronics.
Vifaa kwa hatua hii:
Kichwa cha kuchapisha cha joto cha semikondakta jumuishi1 kipande
Utepe wa karatasi unaohisi joto1 kipande
Mtambo wa kusogeza utepe kwa solenoidi1 kipande
Dirisha la lenzi ya kukuza1 kipande
Bamba la Akriliki1 kipandeZana zinazohitajika:
Seti ya koleo ndogo za usahihiSeti ya bisibisi4
4
Power
Power
Fix the batteries, the auxiliary electronics module and the tape advance on the floor of the lower case. Three 1½ volt cells in series give 4½ volts and eight in series give 12 volts; the auxiliary module drives the tape-advance coil and the print timing. Wire the supply through the on/off switch to the primary electronics, and fit a battery charger plug in the wall of the lower case. Hinge and latch the two case halves so the top lifts for access.
Vifaa kwa hatua hii:
Seli kavu11 vipande
Moduli saidizi ya elektroniki1 kipande
Swichi ya kuwasha/kuzima1 kipandeZana zinazohitajika:
Koleo la kumenya waya
Koleo la Matumizi MengiSeti ya bisibisiVifaa
12- Kishikilia Nafasi
- Kishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- Kishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 11 vipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
Zana Zinazohitajika
4- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.