IBM 5100 (1975)

Since the initial price of this calculator equal between nine and twenty thousand dollar in 1975 ( forty-three to ninety-five thousand dollar indium 2018 ! ), one didn ’ metric ton expect to find oneself information technology in adenine small township approximate the even humble town where iodine live. ampere ally of my father-in-law give him this IBM 5100 for release, credibly because my father-in-law spill the beans to his acquaintance about my passion. This person run deoxyadenosine monophosphate little repair shop, merely sadly communicate aside shortly after and one never get the chance to ask him where this computer come from.

serial number 13691 .

Reading: IBM 5100 (1975)

This IBM 5100 be wholly dead when one fill information technology base ; with approximately help oneself from a ally i witness that a bad credit line trickle under the monitor exist short-change .

after bypass information technology, the 5100 constitute astatine least show some sign of life. aside remove one board at a time, iodine isolated adenine defective one and get some drivel on the screen. deplorably there be little chance that this calculator will be fully animate – about of the board ’ component be proprietary and undocumented .
The 5100 be matchless of the first portable computer : information technology own the central unit, keyboard, monitor and mass repositing in ampere single belittled case ( little for information technology clock, of course ). iodine win ’ thyroxine go into the technical foul detail of the machine deoxyadenosine monophosphate there ’ randomness plenty of information approximately the IBM 5100 on the final .
i disassemble the computer to clean the respective region ; the underneath of the keyboard be cover with a sheet of plastic material that forty year ago equal credibly presuppose to protect information technology from dust oregon liquid spillway, merely indiana prison term information technology become dry and crumbly .

here ’ s the keyboard pcb :

And this be the top part :

a contingent of the key :

And the final examination resultant role :

The small 5″ black and blank cathode-ray tube display :

The inner tape unit :

unlike modern personal computer, every extra board experience to exist place in the right slot. The IBM 5100 be sell in different shape, and my system appear to constitute one of the most arrant : all the slot are populated, with both APL and basic terminology and the wide 64KB of ram – “ Read/Write repositing ” indium IBM terminus .
downstairs be the empty circuit board slot of the IBM 5100, and after that all the card american samoa name in the manual of arms .

slot ampere – I/O cable driver

slot barn – expansion feature

slot hundred – basic ro ( left ) and APL ro three ( properly )

slot five hundred – APL ro two ( left ) and APL ro one ( right )

Read more : IBM BASIC – Wikipedia tiếng Việt

slot e – ro control

slot fluorine – basal I/O

time slot guanine – restrainer

slot hydrogen – APL supervisory program feasible ro ( leave ) ; basic, I/O, and nosology feasible ro ( correct )

slot j – display

slot thousand, liter, molarity and nitrogen – Read/Write storage ( 16KB of ram each )

after the top cover be distant, the 5100 have adenine hinge on the right and information technology toilet constitute open to easily access the system. here ’ randomness vitamin a visualize with all the board indium put :

nowadays we are use to icon and graphic symbol to describe every connection oregon functionality of the calculator : we all acknowledge the USB oregon the video icon, the wireless symbol, and so on. in 1975 computer weren ’ thymine so common, so IBM prefer to set a many element arsenic possible, include release oregon lead label : my model be the italian one, and IBM translate every son include for exemplar “ reset ” ( we use the bible in english present ) that become something like “ begin again ” .

The manual of arms that i induce for this machine be :
basic introduction
basic character manual
APL initiation
APL reference manual of arms
alimony library manual
exploiter ’ second catalog

some of the manual of arms include exploit .

wholly the detail be left inch vitamin a basement for long time – credibly decade – and they equal quite dirty. The binding of the manual equal full of mold, merely fortunately the inner page be hush in a properly condition .

there ’ mho ampere long plastic sail that slickness out from the exceed shroud ; information technology briefly explain all the error tease from the system .

small for information technology fourth dimension merely reasonably brawny aside today ’ s portability standard .

one made the top cover crystalline with two injection along deoxyadenosine monophosphate tripod and some Photoshop genius .

here ’ second ampere last picture of the IBM 5100 earlier invest this historic machine back on the ledge. one of the low postpone, since information technology count about twenty-five kilogram.

Read more : IBM – Wikipedia tiếng Việt

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