X Su thu dich Tinh huu ngh
74 Phuang tien truyen thdng trong ky nguyen cdng nghi thdng tin
vd kich g^n day nhat. Hoac chung ta co th£ nghe nhirng album nhac moi, danh gia cac video ca nhac va quang cao am nhac cua chinh chung ta. Nhu mot sir lira chon, chung ta co the gia nhap nhung tro choi tren may tinh nhu Doom 2. Tham chi chung ta co the giong nhu Hosaka Naoki va Sakai Maki trong nhurng vo kich cua Nhat Ban Hito Natsu No Pu Ro Po Zu (theo dung nghia den la Loi d6 nghi mua he), nuoi nhurng con vat tren may tmh, trao ddi nhung con vat va tham chi ket chung thanh mot doi.
May tinh da phuong tien co the su dung 6 phuong tien truyen thong cung mot luc de giao tiep va co the de dang luu giu, sao chep, chon loc, sap xep lai va truyen t&'t ca cac loai cua noi dung truyen thong. Hon the nua, nguoi su dung co the tac dong qua lai voi may tinh de: sir dung tat ca cac thiet bi. Do la nhurng may tfnh co the thuc hien cac chuong trinh khac nhau theo sir gia nhap va dap lai cua nguoi sir dung thay vao viec chay mot cach cung nhac cac chuong trinh tu dau cho den cuoi. Hon nura ngudi su dung cd the di chuydn giua cac du lieu thdng qua su ket noi sieu van ban, thay vao viec doc mot cach lien tiep. Viec tim kiem va xu ly du lieu nhanh hon va chm h xac hon rat nhieu.
Chung ta co the du kien trudc mot ky nguyen mdi noi ma may tmh xach tay da phuong tien va mang vidn thdng bang rong khdng day se tro thanh nhung san phaim tuong lai trong thdi kv truyen thdng. Didu nay phu thuoc vao kha nang ciia no dd luu giu, truyen va xir ly tat ca cac loai ciia phuong tien truydn thdng. Vi the bat ky mot ai cung cd the truy cap mot cai gi va xir ly no o trong bat ky mot dang duoc uu tien vao thdi didm nao va d dau.
M ay tinh xach tay da phuong tien va mang vidn thdng bang rong khdng day se la cau tra ldi tuong lai cho su phat tridn cua
Chuong 4: Co sd cua phuong tien truyen thdng 75
phuang tien truydn thong. Mac du may tfnh xach tay nho hon m ay tinh van phong nhung am luong va trong luong cua no van bat tien. Vi the may tfnh truydn thong khong day da phuong tien xach tay, mot loai cua thiet bj h6 tra so ca nhan (PDA), dugc sang che. No co the nhan 6 phuong tien truydn thong, no nho hon va dd di chuyen han. Nhung dac diem cua PDA bao g6m gia ca thap hon, tieu thu nang lugng ft hon, kich co nho hon va su dung don gian. Vdi PDA chung ta khong can dien thoai, giay, may fax, hop thu thoai va thu dien tu cho giao tiep nua.
PDA co nhung chuc nang c a ban cua may tinh binh thudng nhung no lai d i sir dung han nhieu. Bang viec an nhe vao bang dieu khien voi mot chiec but la chung ta co the chon nhung cau lenh hoac viet mot cach true tiep. May co the nhan ra chu viet tay ciia con nguoi va bien doi no vao phong chu may tinh tren bang dieu khien. No co the dugc coi la mot may tinh nho. Dugc trang bi vdi mot chiec modem khong day, no co the giri du lieu den mot cai may fax dac biet thong qua song dien khong day. Phuang phap giong nhu vay cung co the dugc sir dung bdi 2 nguoi sir dung PDA de noi chuyen true tuyen. Hon nua, ben canh viec truyen va nhan thu dien tir hoac thu thoai o bat ky luc nao va a dau thi no cung co the’ dugc sir dung nhu la mot trang giay.
Su sang che ra PDA lam cho no trd nen can thiet doi vdi cac thu ky de nang cao trinh do boi vi khdng dd ddi vdi PDA dd tao ra ldi. Khi da len lich bidu thi no se lam viec theo sir sap xep nay. Con gi nua. no cd the chuyen qua lai va cd gia tri trong vong 24 gid mot ngay. N hu the' thi no co the lay mat phan ldn cdng viec ciia mot thu ky, bat buoc cac thu ky phai nghi ra nhung cdng viec khac.