Hisoblash texnikasining rivojlanish tarixi va

Nazorat savollari:

1. 
   EHM nima?
   
2. 
   EHMlarning yaratilish tarixi haqida nimalarni bilasiz?
   
3. 
   EHMlarning nechta avlodi mavjud?
   
4. 
   Birinchi avlod EHMlari haqida nimalarni bilasiz?
   
5. 
   Ikkinchi avlod EHMlarini asosini nima tashkil etadi?
   
6. 
   Integral sxemalar nechanchi avlod EHMlarini asosini tashkil etadi?
   
7. 
   To'rtinchi avlod EHMlari haqida nimalarni bilasiz?
   

Xorij adabiyoti


-■ xv Fundamentals of₄* L>E Inrormation Systems
RALPH STAIR • GEORGE REYNOLDS







compular-ba^ad informaton jystsm |C8tS|
A sinqla ;t< ot ranawxa, sofMart, Sanhaat, tojacommirlcatixs, Mopo, ans trccsxras tha ara con'quroo :o rnllKt, manpuiata, aors, :-d crnceu Oaia mto rtcrmaion.
tachnology infrastructura AU :ha harttiwra, mtiwxa, aatasaa^ iMMmmirwanan oaotio. anc omcBOj-es ma ara contqurod 10 coUKt, manpulata, ncrs. a-d prnctsa Pata mio rtcrmaron

Manual and Computerized Information Systems

As ducussed earlier, an infctmation pstrm can be tnanial or txoipuierixed. Foe example, sccne investment analysts manuady draw dtara ind trend lines to assut thea tn nuking investroen: dcdsions. Tracking dxa oe stock pntzs(input) over the last few tnonths oryean, these analysis desriop paneros on |;raph paper ' prooessit^i thx help theni detcrtr. tne »hat stodt pnces are likely todn in the next fewdays or weeks loutfxit). Some inwestots have made millkms of dollan usint manual stock andysis informatioe systems. Of course, today many eicrllent computerned infomuhon systems follow stock indeies and markets arvd suppest whcn laige bkicks af stocks shauld be purthased ot sold (caBed fnptm rtuTiof to take advactage of tnarkct discrepanctes.
Computer-Based Information Systems
A oomputer-based mfornutioc systcm I dlS) is a singfe set ot hardware, software. daubases. tefeccoimunicaoons, people, and prooeduies that are configured tocnlicci. nunipulate, stoee. and ptccess dau tnto infnrmatsan. Ucyd's I nsurance in London used a CBIS to reduce paper traosamons and conven to an eiearonic insurance systeai. Tbe CB15 allows Lktyd'sto insure pecpw and proptrty motr efliciently and etfeaively. Uoytf s cdten insures the unusuai. iss- dudmg acuas Betty Cutde's Je^s. Rnllinf 5tcoe Ketth Richards's hands, and a possible appearance of the laxh Ness Monster (Nesuc'l in Scodand. whadi wcukl resuh in 1 laq.*c payment for thc person fmt secinj the tnonster.